High School · 30 classes

National History

Each class is a short animated explainer with narration, plus quick checks, an interactive, and a mastery quiz — at a college-prep level. Your progress saves automatically.

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01
Who were the first Americans — really?
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02
Contact and Conquest — Europe Arrives
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03
Colonial America — Thirteen Colonies, Thirteen Stories
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04
The Road to Revolution
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05
The Revolution and the Declaration
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06
Building a Government — Articles, Constitution, and Compromise
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07
Westward Expansion and Manifest Destiny
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08
The Market Revolution — America Industrializes
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09
Slavery — The Institution at the Heart of the Crisis
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10
Reform, Abolition, and Women's Rights
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11
The Coming of the Civil War
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12
Fighting the Civil War
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13
Reconstruction — The Promise and the Betrayal
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14
The Gilded Age — Robber Barons and the New Industrial Order
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Immigration and Urbanization
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The Progressive Era — Reform Takes the Wheel
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America Enters the World — The Spanish-American War and Imperial Ambitions
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World War I — America Goes to War
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The Roaring Twenties and the Crash
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The Great Depression — Hardship and Desperation
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The New Deal — Government as Solution
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World War II — A World at War
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The Cold War Begins
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24
McCarthyism and the Red Scare at Home
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25
The Civil Rights Movement — The Long Freedom Struggle
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26
Vietnam and the Fracturing of Consensus
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The 1970s — Crisis, Stagflation, and the Limits of Liberalism
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28
The Reagan Revolution and the End of the Cold War
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29
The 1990s Through 9/11 — Globalization, Prosperity, and Shock
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30
America in the 21st Century — Unfinished Stories
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See inside a class

Here’s all of Class 1, in full.

Every class is 13 cards · narrated film + illustration · 2 quick checks · an interactive · a 4-question mastery quiz. Nothing hidden — this is the complete text of Who were the first Americans — really?.

▸ Read the full class — Who were the first Americans — really?

Welcome to class one. You have probably been told that Columbus discovered America in 1492. Today we are going to take that sentence apart, because it does not really hold up. Columbus did not discover a place — he arrived at a place. A place that already had millions of people living in it. People who had been there for at least fifteen thousand years. They had built cities, organized governments, traded across thousands of miles, and developed sophisticated knowledge of agriculture, astronomy, and medicine. The so-called New World was not new to them. It was home. By the end of this class, you will understand what that world actually looked like — and why the story we tell about it matters so much for everything that came after.

1. The "empty continent" myth — and why it was invented.

If the land was empty, nobody stole it. That is why the myth exists.

For centuries, European settlers and American historians described North America before Columbus as a wilderness — unpopulated, uncultivated, waiting to be used. This was not a mistake. It was a justification.

  • Describing land as empty made taking it feel legal and moral.
  • Native peoples were portrayed as nomads with no fixed territory — even when they had cities.
  • The myth erased thousands of years of land management, agriculture, and governance.
  • It still shapes how we talk about American history — and American law.

2. 600 distinct nations, 50 million people.

There was no single "Native American culture" any more than there is a single "European culture."

Before European contact, the Americas were home to an estimated 50 to 100 million people. In North America alone, there were approximately 600 distinct nations, each with its own language, government, economy, and traditions.

  • Estimated 50–100 million people in the Americas at time of first contact.
  • ~600 distinct nations in North America — with hundreds of distinct languages.
  • Enormous regional diversity: from Arctic hunters to tropical farmers to desert peoples.
  • Major language families: Algonquian, Iroquoian, Siouan, Athabaskan, Uto-Aztecan, and dozens more.

3. How people first came to the Americas — and built extraordinary things.

The first Americans arrived at least 15,000 years ago. Some evidence suggests even earlier.

The first people arrived in the Americas by crossing a land bridge from Siberia to Alaska during the last ice age, when sea levels were much lower. From there, they spread across two continents — eventually reaching the tip of South America within a few thousand years.

  • ~15,000+ years ago: first humans cross from Siberia to Alaska (land bridge called Beringia).
  • Within a few thousand years: people spread to the tip of South America.
  • By 1000 CE: Cahokia, near modern St. Louis, is larger than London at the same time.
  • Haudenosaunee Confederacy: a functioning democracy influencing the Founders.
  • Chaco Canyon: a regional trade hub with roads extending hundreds of miles.

4. Agriculture, trade, and governance — how these societies worked.

Native peoples managed the land so effectively that European settlers often thought the forests and meadows they found were "natural."

Pre-Columbian North American societies had sophisticated systems for growing food, managing land, governing communities, and trading over vast distances. Much of the 'wilderness' the first European settlers encountered was actually carefully managed landscape.

  • The Three Sisters (corn, beans, squash) were a sophisticated agricultural system that fed millions.
  • The Mississippi River trade network connected the Gulf of Mexico to the Great Lakes.
  • The Haudenosaunee had a written constitution (the Great Law of Peace) before Europe had the Magna Carta.
  • Eastern forests were maintained through controlled burning — the "wilderness" Europeans found was managed land.
  • Native women in many nations owned property, chose leaders, and held political power.

5. The Great Law of Peace — the Haudenosaunee constitution.

The Haudenosaunee had a functioning democracy centuries before the American Founders wrote one.

The Haudenosaunee Confederacy — the people often called the Iroquois, though they prefer their own name — had a governing constitution called the Great Law of Peace. Scholars date its origins to somewhere between 1100 and 1450 CE, though the oral tradition holds it is even older. It governed the relationship between five, later six, nations: the Mohawk, Onondaga, Cayuga, Oneida, Seneca, and Tuscarora. The Great Law established a bicameral council — two deliberating bodies — and a system where clan mothers held the power to select and remove male leaders. Any leader who abused power could be recalled. Decisions were made by consensus across nations. When Benjamin Franklin convened the Albany Congress in 1754 to try to unite the colonies, he explicitly cited the Haudenosaunee as a model. The irony of the American Founders borrowing democracy from the people they were simultaneously displacing is something historians still wrestle with.

6. The ideas and systems that made Native societies resilient.

These societies lasted thousands of years. The United States is less than 250 years old.

Pre-Columbian Native American societies were not frozen in time or unchanging. They adapted, traded, went to war, formed alliances, and evolved over millennia. Several key principles made many of them remarkably stable and sophisticated.

  • Reciprocity: the obligation to share resources within and between communities.
  • Oral tradition: history, law, and knowledge transmitted with extraordinary precision across generations.
  • Seasonal mobility: many groups moved with the food, which meant no single place was over-harvested.
  • Confederacy: grouping smaller nations into alliances spread power and prevented any one group from dominating.
  • Women's authority: in many nations, women controlled food stores, housing, and political nominations.

7. Cahokia — the city that was bigger than London.

Around 1100 CE, a Native American city near present-day St. Louis had up to 20,000 residents. Most people in America have never heard of it.

Around the year 1100 CE, the largest city in what is now the United States was not on the East Coast. It was in the Midwest, near the confluence of the Missouri, Mississippi, and Illinois rivers, in present-day Illinois. We call it Cahokia. At its peak, Cahokia had between ten and twenty thousand residents — making it larger than London at the same time. It covered about six square miles, contained at least one hundred and twenty earthen mounds, and at its center stood Monks Mound — a stepped earthen pyramid larger at its base than the Great Pyramid of Giza. Cahokia was the center of the Mississippian culture, a regional network that traded copper from the Great Lakes and shells from the Gulf of Mexico. People from hundreds of miles away came here. Then, around 1350 CE, it was largely abandoned. Archaeologists still debate why — environmental degradation, drought, political collapse, or some combination. The point is: this city existed, it was extraordinary, and most Americans have never heard of it. That absence is itself a kind of history.

8. Ninety percent. That is how much of the Native population died.

The largest demographic catastrophe in human history happened in the Americas after 1492.

When Europeans arrived in the Americas, they brought diseases that Native populations had never encountered — and had no immunity to. The result was the largest demographic collapse in recorded history.

  • Estimated 50–90% of Native American populations died within 100–150 years of first contact.
  • Smallpox was the primary killer — it spread far ahead of European settlement.
  • Many tribes that Europeans "discovered" were already devastated remnants of larger populations.
  • Some historians estimate the population of the Americas fell from 50–60 million to under 6 million.
  • The depopulation created the "empty" landscape that Europeans mistook for wilderness.

9. Two worlds in 1491 — neither one what the myths say.

In 1491, Europe was not obviously more "advanced" than the Americas by most measures.

The traditional narrative places a sophisticated, civilized Europe encountering a primitive, stone-age America. The historical reality is more complicated — and more interesting.

  • Europe in 1491: recovering from the Black Death, riven by religious wars, no democratic governments.
  • Aztec capital Tenochtitlan: larger than any city in Europe in 1491, with running water and floating gardens.
  • Haudenosaunee: democratic governance that Europe would not achieve for centuries.
  • Three Sisters agriculture: more sustainable than European monoculture farming.
  • What Europe had: ocean-going ships, gunpowder, and (crucially) Eurasian diseases.

10. Four myths about pre-Columbian America that need to go.

"Indians" is not a coherent category. It is a navigation error that stuck.

American popular culture has a complicated relationship with Indigenous history. These four myths show up repeatedly in textbooks, films, and casual conversation — and all of them are wrong.

  • "Native Americans were primitive." False. Cahokia was bigger than London. The Haudenosaunee had a democracy.
  • "They were nomadic and had no fixed land." False. Most nations had very specific, defended territories.
  • "They didn't really own the land because they didn't farm it." False. Many nations farmed intensively — and even hunters managed their land.
  • "They were all alike." False. Six hundred nations, hundreds of languages, radically different cultures.

11. Archaeology, oral history, and the sources that survived.

Most written accounts of pre-Columbian America were written by the people who destroyed it.

Recovering pre-Columbian history is challenging because the primary written sources were created by Europeans after contact, often with obvious biases. Historians use multiple methods to get closer to the truth.

  • Archaeology: physical sites, artifacts, and analysis of bones and seeds.
  • Oral tradition: carefully preserved histories transmitted by Native nations themselves.
  • Linguistics: tracing language families to map migrations and relationships.
  • Epidemiology: estimating pre-contact populations by working backward from disease death rates.
  • European accounts — biased but still useful when read critically.

12. Three things to do this week if this class opened something for you.

Cahokia is a UNESCO World Heritage site you can visit. It is in Illinois.

If this class sparked something — anger, curiosity, the feeling that you were not taught the real story — here are three ways to go further.

  • Read: "1491" by Charles Mann — the book that changed how historians think about pre-Columbian America.
  • Visit: Cahokia Mounds State Historic Site in Collinsville, Illinois — free admission, genuinely stunning.
  • Listen: Native Land Digital (native-land.ca) — enter your address and find out whose land you are on.
  • Watch: "We Shall Remain" — a five-part PBS documentary series told from Native perspectives.

13. The Americas were not empty. That changes everything.

Every chapter of American history looks different once you understand what came before the nation.

Six things to take away from today.

  • The Americas had 50–100 million people before European contact — not empty land.
  • About 600 distinct nations in North America, each with its own language and government.
  • Cahokia was bigger than London in 1100 CE. The Haudenosaunee had a democratic constitution.
  • European diseases killed 50–90% of the Indigenous population within 150 years of contact.
  • The "empty wilderness" settlers found was actually the aftermath of the deadliest plague in history.
  • This is not just a Native American story. It is the foundation of everything else in American history.

Mastery quiz

  1. Around 1100 CE, what made the city of Cahokia remarkable according to the class?
    • It was the capital of the Aztec Empire
    • Its population of 10,000-20,000 made it larger than London at the time
    • It was built entirely of stone like European cathedrals
    • It was located on the East Coast near the Pilgrims
  2. What does the class identify as the main cause of the death of 50-90% of the Indigenous population after contact?
    • Large-scale military conquest by European armies
    • Famine caused by abandoning agriculture
    • Epidemic diseases like smallpox to which Native peoples had no immunity
    • Voluntary migration away from European settlements
  3. What was the Great Law of Peace of the Haudenosaunee Confederacy?
    • A trade agreement covering shells and copper across the continent
    • A governing constitution with a bicameral council in which clan mothers could select and remove leaders
    • A treaty signed with European colonists in 1754
    • A religious text describing the crossing from Siberia
  4. According to the comparison of the Americas and Europe in 1491, what ultimately gave Europe the advantage?
    • Superior culture and more advanced civilization
    • Larger and cleaner cities than the Americas
    • Ocean-going ships, gunpowder weapons, and a reservoir of deadly diseases from animal husbandry
    • A more stable democratic government
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