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| 196637993 | 30,000-15,000 B.C.E. | First humans in the Americas | |
| 196637994 | 13,000 B.C.E. | Global warming trend begins | |
| 196637995 | 10,000 B.C.E. | Clovis technology | |
| 196637996 | 9000 B.C.E. | Extinction of big-game animals | |
| 196637997 | 8000 B.C.E. | Beginning of the Archaic period | |
| 196637998 | 7000 B.C.E. | First cultivation of plants in the Mexican highlands | |
| 196637999 | 5000 B.C.E. | Athapascan migrations to America begin | |
| 196638000 | 4000 B.C.E. | First settled communities along the Pacific coast | |
| 196638001 | 3000 B.C.E. | Inupiat and Aleut migrations begin | |
| 196638002 | 1500-1000 B.C.E. | Maize and other Mexican crops introduced into the Southwest | |
| 196638003 | 1000 B.C.E. | Beginning of Adena culture; First urban communities in Mexico | |
| 196638004 | 250 B.C.E. | Beginning of Mogollon culture in the Southwest | |
| 196638005 | 200 B.C.E.-C.E. 400 | Hopewell culture flourishes | |
| 196638006 | 650 | Bow and arrow, flint hoes, and Northern Flint corn in the Northeast | |
| 196638007 | 775-1150 | Hohokam site of Snaketown reaches its greatest extent | |
| 196638008 | 1000 | Tobacco in use throughout North America | |
| 196638009 | 1150 | Founding of Hopi village of Oraibi, oldest continuously occupied town in the United States | |
| 196638010 | 1200 | High point of Mississippian and Anasazi cultures | |
| 196638011 | 1276 | Severe drought begins in the Southwest | |
| 196638012 | 1300 | Arrival of Athapascans in the Southwest | |
| 196638013 | 1451 | Founding of Iroquois Confederact |
