In short
Around 14,000 years ago, groups of hunter-gatherers from northeastern Asia crossed a now-submerged land bridge into Alaska and gradually spread throughout North and South America over millennia. This migration populated two continents and established the ancestral societies from which all Indigenous American peoples descended. The timing and route of this settlement remain subjects of active archaeological debate, with some evidence suggesting even earlier arrivals.
How it unfolded.
The five-minute version
What actually happened.
It is believed that the peopling of the Americas began when Paleolithic hunter-gatherers (Paleo-Indians) entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum. These populations expanded south of the Laurentide Ice Sheet, either by sea or land, and spread rapidly southward, occupying both North and South America no later than 14,000 years ago, and possibly before 20,000 years ago. The earliest populations in the Americas, before roughly 10,000 years ago, are known as Paleo-Indians. Indigenous peoples of the Americas have been linked to Siberian populations by the distribution of blood types, and in genetic composition as reflected by molecular data, such as DNA.
As it was happening
12 voices, 4405605 days.
One beat at a time. Click any dot on the timeline to jump, press play for autoplay, or use the arrow keys to step.
Rise of early complex societies
Civilizations including the Olmec in Mesoamerica and Chavín in South America emerge, featuring monumental architecture, organized religion, and sophisticated trade networks.
Voices from this moment (5)
The Peopling of America, Smithsonian Institution, 1937
Nov 12
“The skeletal morphology is unambiguous.”
Synthesized from period accounts - oral traditions documented by 20th-century anthropologists
Jan 1
“The great beasts followed the grass across the frozen…”
Synthesized from period accounts - Stanford's publications and conference presentations, 1990s-2000s
Aug 1
“The evidence at Cactus Hill and Monte Verde suggests…”
Synthesized from period accounts - Heyerdahl's public lectures and publications, 1950s-1970s
Mar 20
“Must we believe all Americans came via a single frozen…”
1 more voices - captured but not shown in this slot.
As it was happening
12 voices, 4405605 days.
Day 387938 · January 1, 3000
Rise of early complex societies
Civilizations including the Olmec in Mesoamerica and Chavín in South America emerge, featuring monumental architecture, organized religion, and sophisticated trade networks.
“The skeletal morphology is unambiguous.”
- The Peopling of America, Smithsonian Institution, 1937, Nov 12
“The great beasts followed the grass across the frozen…”
- Synthesized from period accounts - oral traditions documented by 20th-century anthropologists, Jan 1
“The evidence at Cactus Hill and Monte Verde suggests…”
- Synthesized from period accounts - Stanford's publications and conference presentations, 1990s-2000s, Aug 1
“Must we believe all Americans came via a single frozen…”
- Synthesized from period accounts - Heyerdahl's public lectures and publications, 1950s-1970s, Mar 20
“Civilizations including the Olmec in Mesoamerica and Chavín…”
- Rise of early complex societies, Jan 1
Day 1118423 · January 1, 5000
Agricultural transition begins in Mesoamerica
Early domestication of plants including maize, beans, and squash in the Tehuacán Valley and other Mesoamerican regions, eventually supporting complex sedentary societies.
“Early domestication of plants including maize, beans, and…”
- Agricultural transition begins in Mesoamerica, Jan 1
Day 2214150 · January 1, 8000
Development of diverse subsistence strategies
Different populations adopt specialized hunting, fishing, and gathering techniques suited to local environments, from coastal maritime resources to plains megafauna hunting to forest cultivation.
“Different populations adopt specialized hunting, fishing,…”
- Development of diverse subsistence strategies, Jan 1
Day 2579393 · January 1, 9000
Peopling of South America accelerates
Human populations expand into Central America and begin the long process of settling the Pacific and Atlantic coasts of South America, reaching the southern tip by approximately 12,500 years before present.
“Human populations expand into Central America and begin the…”
- Peopling of South America accelerates, Jan 1
Day 2944635 · January 1, 10000
Human populations established across continental North America
Archaeological evidence indicates human habitation from present-day Canada to Mexico, with distinct regional adaptations to local environments and resources.
“Archaeological evidence indicates human habitation from…”
- Human populations established across continental North America, Jan 1
Day 3309878 · January 1, 11000
Clovis culture emergence in North America
Distinctive flaked stone points appear across North America, representing one of the earliest widespread archaeological cultures, though pre-Clovis sites now complicate the long-held Clovis-first model.
“Distinctive flaked stone points appear across North…”
- Clovis culture emergence in North America, Jan 1
Day 3675120 · January 1, 12000
Last Glacial Maximum end and Beringia submergence begins
As global temperatures rise and sea levels begin to recover, the Beringia land bridge gradually becomes submerged, restricting further land-based migration between Asia and North America.
“As global temperatures rise and sea levels begin to…”
- Last Glacial Maximum end and Beringia submergence begins, Jan 1
Day 4405605 · January 1, 14000
Earliest proposed human crossing of Beringia
Archaeological evidence from sites like Monte Verde (Chile) and the Bluefish Caves (Yukon) suggests human presence in the Americas by this period, though dates and interpretation remain contested.
“Archaeological evidence from sites like Monte Verde (Chile)…”
- Earliest proposed human crossing of Beringia, Jan 1
The numbers.
6 numbers that anchor the scale.
By the numbers
The countable parts.
Approximate date of earliest known crossings
0 years before present (12,000 BCE)
Beringia land bridge width at peak exposure
0 kilometers (1,000 miles)
Sea level drop during Last Glacial Maximum
0 meters (400 feet) below present levels
Estimated time for complete continental colonization
0-5,000 years from initial crossing
Number of distinct Indigenous language families by 1500 CE
0+ documented languages
Pre-Columbian American population estimate
0-100 million people
Captured in time.
Captured before it changed
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Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.Human settlement of the Americas
en.wikipedia.org