The 2nd millennium BC in North American history provides a timeline of events occurring within the North American continent from 2000 BC through 1001 BC in the Gregorian calendar. This time period (from 2000 BC–1001 BC) is known as the Late Archaic. Although this timeline segment may include some European or other world events that profoundly influenced later American life, it focuses on developments within Native American communities. The archaeological records supplements indigenous recorded and oral history.
Because of the inaccuracies inherent in radiocarbon dating and in interpreting other elements of the archaeological record, most dates in this timeline represent approximations that may vary a century or more from source to source. The assumptions implicit in archaeological dating methods also may yield a general bias in the dating in this timeline.