A History of Alaska

• Introduction
• Chapter 1 The Land Before Time: Geological Formation and the Bering Land Bridge
• Chapter 2 First Peoples: Paleo-Arctic and Athabascan Cultures
• Chapter 3 The Maritime Peoples: Unangax, Sugpiaq, and Yup'ik Societies
• Chapter 4 The Tlingit, Haida, and Tsimshian: A Rich Coastal Civilization
• Chapter 5 Russian Encounters: Vitus Bering and the Great Northern Expedition
• Chapter 6 The Fur Rush: Promyshlenniki and the Exploitation of Resources
• Chapter 7 Rise of the Russian-American Company: Baranov and the Colonial Administration
• Chapter 8 Orthodox Missionaries and Their Impact on Native Cultures
• Chapter 9 "Seward's Folly": The Alaska Purchase of 1867
• Chapter 10 The Neglected District: Early American Rule and Military Presence
• Chapter 11 Gold!: The Klondike Gold Rush and its Impact on Alaska
• Chapter 12 The Road to Self-Governance: The Organic Act of 1912
• Chapter 13 World War I and the Rise of Canneries and Copper
• Chapter 14 The Matanuska Valley Colony: A New Deal Experiment
• Chapter 15 The Forgotten War: The Aleutian Campaign of World War II
• Chapter 16 The Cold War Frontline: Building the DEW Line and Military Buildup
• Chapter 17 The Fight for Statehood: A Long and Arduous Journey
• Chapter 18 The 49th State: Alaska Joins the Union in 1959
• Chapter 19 The Great Alaska Earthquake of 1964: A State in Peril
• Chapter 20 Black Gold: The Discovery of Prudhoe Bay Oil
• Chapter 21 The Alaska Native Claims Settlement Act (ANCSA) of 1971
• Chapter 22 Building the Trans-Alaska Pipeline: An Engineering Marvel
• Chapter 23 The Exxon Valdez Oil Spill: An Environmental Catastrophe
• Chapter 24 Modern Alaska: Economic Diversification and Political Challenges
• Chapter 25 The Last Frontier in the 21st Century: Climate Change and the Future
• Appendix Timeline of Alaska's History

To contemplate the history of Alaska is to grapple with the concept of scale. The sheer size of the place is the first thing that strikes anyone looking at a map. At over 665,000 square miles, it is a land of superlatives, more than twice the size of Texas and larger than the next three largest states combined. An old Alaskan joke says that if you cut the state in half, Texas would become the third-largest state in the Union. Its coastline is longer than all the other U.S. states combined. It contains North America's highest peak, Denali, and thousands of glaciers, some the size of small countries. This immense and often unforgiving landscape is not merely a backdrop for its history; it is a central character, shaping every human endeavor within its bounds. The state’s very name is derived from the Aleut word Alaxsxaq, meaning "the mainland" or "the great land"—a fitting description for a place that has always loomed large in the human imagination.

This story begins long before the first Europeans arrived, in a time when a land bridge connected Asia and North America. The first peoples of Alaska crossed this bridge, following herd animals into a new world. For thousands of years, diverse and sophisticated Indigenous cultures thrived, adapting brilliantly to the challenging environments. From the maritime peoples of the Aleutian Islands and the Arctic coast to the Athabascan groups of the vast interior and the wealthy, art-producing societies of the Tlingit, Haida, and Tsimshian in the southeast, they built a rich and complex world. Their history is the foundational layer of Alaska's story, a narrative of resilience, ingenuity, and deep connection to the land that stretches back for millennia.

The arrival of outsiders was, like the landscape itself, dramatic and transformative. In 1741, a Russian expedition led by Danish explorer Vitus Bering made contact, ushering in an era of violent exploitation and profound cultural exchange. The Russian-American Company, driven by the lucrative fur trade, established a colonial presence that lasted for over a century. They were followed by missionaries of the Orthodox Church, whose influence on Native cultures remains visible to this day. But Russia's hold on its distant American colony was tenuous. By the mid-19th century, with the fur-bearing animal populations decimated and the territory difficult to defend, Russia decided to sell.

In 1867, U.S. Secretary of State William H. Seward engineered the purchase of Alaska for $7.2 million, a sum that amounted to about two cents an acre. The deal was widely ridiculed at the time, dismissed by critics as "Seward's Folly" and a waste of money on a frozen wasteland they called "Seward's Icebox." For decades, it seemed the critics might be right. The United States largely neglected its new "Department of Alaska," leaving it under the minimal authority of the military or, at one point, a single customs collector in Sitka. But that all changed with a single word: gold.

The Klondike Gold Rush at the close of the 19th century, followed by discoveries in Nome and Fairbanks, brought a flood of stampeders north, forever altering the territory's trajectory. This frantic, often chaotic, period established many of Alaska's towns and cemented its image in the American mind as "The Last Frontier," a land of rugged individualism and boundless opportunity. The boom-and-bust cycle of resource extraction, from gold to copper to fish, would become a recurring theme in Alaska's economic life.

The 20th century saw Alaska's strategic importance grow exponentially. During World War II, the Aleutian Islands became a battleground, the only part of North American soil occupied by enemy forces, leading to a massive military buildup that reshaped the territory's infrastructure and population. The subsequent Cold War turned Alaska into a frontline of defense, with the construction of early warning radar systems and a permanent military presence that continues to be a vital part of its economy and identity. This federal investment, combined with a growing desire for self-determination, fueled a long and determined fight for statehood, finally achieved in 1959 when Alaska became the 49th state.

Just a decade later, another discovery would once again revolutionize Alaska's fortunes: the discovery of massive oil reserves at Prudhoe Bay. The construction of the Trans-Alaska Pipeline in the 1970s was an engineering marvel and the source of an unprecedented economic boom that transformed Alaskan society. It funded state government, eliminated state income taxes, and created a unique annual dividend payment for every resident. This immense wealth also brought complex challenges, leading to the landmark Alaska Native Claims Settlement Act (ANCSA) and raising profound questions about resource management, environmental protection, and the future of the state's economy. These questions became starkly real with two major environmental catastrophes, the 1964 Good Friday Earthquake and the 1989 Exxon Valdez oil spill, events that seared themselves into the state's collective memory.

From the Ice Age to the oil age, the story of Alaska is one of adaptation, conflict, and reinvention. It is a history populated by Paleo-Arctic hunters, Tlingit traders, Russian promyshlenniki, Orthodox priests, American prospectors, New Deal colonists, Cold War soldiers, and pipeline workers. It is a narrative that unfolds across a vast and majestic stage, a story not just of a state, but of a unique corner of the world that has always been, and remains, a Great Land.

To understand the human story of Alaska, one must first grasp a history written not in words but in rock, ice, and the slow, inexorable drift of continents. The landmass we now call Alaska is a geological infant, a cosmic newcomer assembled from a jumble of itinerant crustal fragments that spent much of their existence wandering the vast expanse of the ancient Pacific Ocean. This history begins hundreds of millions of years ago, long before the first people set foot in the Americas, in an era when the very shape of the world was alien to our modern eyes. The engine of this grand construction project was, and remains, plate tectonics—the perpetual dance of Earth's crustal plates, which grind against, slide under, and crash into one another with forces that can scarcely be imagined.

Nearly all of Alaska is a collage of what geologists call "accreted terranes." These are not states or territories in the political sense, but massive blocks of crust, each with its own unique geological history, that formed elsewhere and were ferried across the ocean by the movement of tectonic plates. Like mismatched barges, they eventually collided with the western edge of the ancestral North American continent and, unable to be pushed back under, were scraped off and welded onto the mainland. This process, repeated over countless eons, gradually built Alaska outward, piece by piece, into the Gulf of Alaska. The state is, in essence, a tectonic junkyard, a testament to the chaotic and creative power of planetary geology.

Among the most significant of these traveling landmasses are the Wrangellia and Alexander terranes, which together form a substantial portion of southern and southeastern Alaska. Paleomagnetic data, which reads the ancient magnetic orientation locked within rocks, suggests these terranes have led a peripatetic existence, possibly originating at low northern latitudes, journeying into the southern hemisphere, and then migrating north to their present location. The Wrangellia Terrane is particularly notable for a dramatic period of volcanic activity about 230 million years ago, when vast eruptions of flood basalts covered the landmass in a thick layer of lava. By the Pennsylvanian period, Wrangellia had collided and merged with the Alexander Terrane. This composite super-terrane continued its journey until it ultimately crashed into North America during the Cretaceous period, roughly 110 to 85 million years ago.

The immense pressure generated by these tectonic collisions was the primary force that crumpled and uplifted Alaska’s spectacular mountain ranges. As the Pacific Plate continues to drive north and slide beneath the North American Plate—a process known as subduction—it acts like a slow-motion car crash on a continental scale. This ongoing collision has given rise to the towering peaks of the Alaska Range, the Chugach Mountains, and the St. Elias Mountains. The weak zones and ancient suture lines between the accreted terranes provided natural points of failure, allowing the rock to buckle, fault, and be thrust skyward over millions of years. This process created Denali, North America's highest peak, and continues to push the mountains higher even today, making Alaska one of the most seismically active places on Earth.

This same tectonic activity fuels the state’s fiery volcanism. The subduction of the Pacific Plate along the southern coast melts rock deep within the Earth, which then rises to the surface to feed the hundreds of volcanoes that form the Aleutian Arc. This chain of islands, stretching over a thousand miles into the Pacific, is a classic example of a volcanic island arc and a major component of the Pacific "Ring of Fire," a zone of intense geological activity that encircles the Pacific Ocean. The Brooks Range in northern Alaska, while also a product of tectonic forces, has a different origin story, formed by the thrusting and stacking of rock layers as ancient landmasses were compressed against the Arctic edge of the continent.

While tectonics built the mountains, it was ice that sculpted the landscape into its present form. For much of the last 2.5 million years, a period known as the Pleistocene Epoch, Earth has been subject to recurring ice ages. During these glacial periods, vast sheets of ice and sprawling mountain glaciers advanced, grinding and carving the terrain. In Alaska, the coastal mountains of the south and southeast, close to the moisture-laden air of the Gulf of Alaska, were buried under a massive ice sheet, a western extension of the great Cordilleran Ice Sheet that covered much of western North America. Glaciers flowed down from the Alaska Range, the Chugach, and other coastal mountains, gouging out deep U-shaped valleys, carving knife-edged arêtes and horn peaks, and creating the stunning fjords that characterize the state's southern coastline.

Yet, paradoxically, during the great ice ages, much of Alaska was not covered in ice. The vast interior, lying in the rain shadow of the Alaska Range, and the North Slope, south of the Brooks Range, remained largely ice-free. These regions were simply too arid for large ice sheets to form; what little precipitation fell was not enough to accumulate into continental-scale glaciers. This unglaciated expanse formed the easternmost part of a much larger ice-free region that stretched across the exposed seafloor of the Bering and Chukchi Seas all the way to Siberia. This lost subcontinent is known as Beringia.

The formation of Beringia was a direct consequence of the ice ages. As colossal amounts of Earth's water became locked up in continental glaciers, global sea levels dropped by as much as 400 feet. This dramatic drop exposed the shallow continental shelf connecting Asia and North America, creating a vast land bridge that, at its greatest extent, was over a thousand miles wide. Beringia was no narrow, barren isthmus. It was an immense landmass covering an area roughly the size of British Columbia and Alberta combined, a world unto itself. The final emergence of this land bridge began around 70,000 years ago, providing a pathway for life to move between the two continents.

The environment of Beringia was unlike anything that exists today. It was a cold, arid world, a vast grassland often referred to as the "mammoth steppe." While traditionally envisioned as a uniform, treeless plain, more recent evidence suggests Beringia was an ecologically diverse mosaic. It was dominated by steppe-tundra vegetation, rich in grasses and herbaceous plants, but also featured patches of shrub tundra and isolated pockets of larch, spruce, and birch trees that found refuge in sheltered areas. This surprisingly productive environment supported a stunning array of large Ice Age animals, a collection of megafauna far more diverse than what exists in the Arctic today.

Herds of woolly mammoths, mastodons, and giant steppe bison were the undisputed titans of this lost world. They were joined by Yukon horses, caribou, and muskoxen. The abundance of these large herbivores supported a formidable array of predators. Scimitar cats and the famed saber-toothed cat prowled the steppe, alongside giant short-faced bears, one of the largest mammalian land carnivores ever to live. Gray wolves, much as they do today, hunted in packs, their population thriving across the expansive landscape. The richness of this ecosystem challenges the modern perception of the Arctic as a barren wasteland, revealing it instead as a former center of biodiversity.

It was in pursuit of these great herds that the first humans are believed to have made their way into the Americas. Paleolithic hunter-gatherers from the mammoth steppe of North Asia followed their prey eastward onto the Bering Land Bridge. This was not a single, purposeful migration but likely a slow, generational expansion over thousands of years as small, mobile groups of people moved into new hunting grounds. Genetic and archaeological evidence suggests humans were present in Siberia 25,000 years ago and may have inhabited the Beringia region for thousands of years before moving further into North America around 15,000 years ago. This long pause, known as the "Beringian Standstill," suggests that the land bridge was not just a corridor but a homeland in its own right, a place where people lived for millennia, adapting to the harsh Arctic environment.

The exact timing and route of the first peoples' push south from Beringia into the heart of the Americas remains a subject of intense scientific debate. For many years, the prevailing theory held that migrants traveled through an "ice-free corridor" that opened up between the retreating Laurentide and Cordilleran ice sheets in what is now Alberta and British Columbia. However, more recent evidence suggests this corridor may not have been open and biologically viable—meaning, able to support human life—until after people were already established south of the ice sheets.

An alternative and increasingly supported hypothesis is the "coastal migration route." This theory proposes that the first Americans, possibly using some form of watercraft, followed the Pacific coastline south from Beringia. Recent geological studies have shown that portions of Alaska's coast may have been ice-free as early as 17,000 years ago, offering a habitable route with access to rich marine resources long before the interior corridor was passable. Archaeological sites in southern Chile dated as early as 14,500 years ago lend strong support to the idea that people arrived in the Americas well before the ice-free corridor was a viable option. It is plausible that both routes were eventually used, with coastal peoples moving south first, followed by later migrations through the interior.

The oldest archaeological sites in Alaska provide tantalizing glimpses into the lives of these first peoples. Sites in the Tanana Valley, such as Broken Mammoth, Swan Point, and the Upward Sun River Site, have yielded radiocarbon dates between 11,000 and 12,000 years old. The Upward Sun River site is particularly significant as it contains the oldest human remains found on the American side of Beringia, dating to around 11,500 years ago. A recently analyzed campsite in the same valley, the Holzman site, shows evidence of human presence around 14,000 years ago, including hearths and tools for working mammoth ivory. Further north, at the Mesa site, remnants of ancient campfires and stone projectile points suggest hunters were scanning the landscape for Ice Age mammals between 11,700 and 13,600 years ago. These discoveries paint a picture of highly mobile, skilled hunters adapting to a challenging but resource-rich environment.

The world of Beringia, however, was destined to vanish. As the Earth's climate began to warm around 18,000 years ago, the colossal ice sheets that had defined the Pleistocene began to melt. This meltwater poured into the oceans, causing a steady and sometimes rapid rise in global sea levels. The low-lying plains of the Bering Land Bridge were slowly inundated. The final connection between the continents was severed around 11,000 years ago, when the rising waters of the Pacific and Arctic Oceans met, forming the Bering Strait we know today. This event isolated the populations that had crossed into the Americas, cutting them off from their ancestral lands in Asia and setting them on a distinct historical and genetic path.

The end of the Ice Age brought not only rising seas but also profound environmental change. As temperatures warmed, the dry, grassy mammoth steppe gave way to a wetter environment characterized by expanding shrub tundra, peatlands, and eventually, the encroachment of boreal forests. This dramatic shift in vegetation had catastrophic consequences for the Pleistocene megafauna. The great herds of mammoths, horses, and bison that had thrived on the steppe grasses lost their primary food source. Faced with a changing habitat and, at the same time, the pressures of human hunting, these iconic Ice Age giants disappeared in a wave of extinction.

The debate over the precise cause of the late Pleistocene extinction—whether it was climate change, human overkill, or a combination of both—continues among scientists. It is likely that a perfect storm of factors was responsible. An ecosystem already stressed by rapid warming and habitat loss was likely pushed over the brink by the arrival of a highly efficient new predator: humans. While early human populations in Alaska were small, their coexistence with megafauna for thousands of years suggests a complex relationship. Nevertheless, the disappearance of these large animals profoundly reshaped the ecosystem. Some species, like caribou and muskox, adapted and survived. Others, like the woolly mammoth, vanished forever, leaving behind only fossilized bones and the lingering mystery of their demise. The closing of the Bering Strait and the great extinction marked the end of one era and the beginning of another, setting the stage for the diverse Indigenous cultures that would rise in a newly shaped, post-Ice Age Alaska.