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Other civilizations, contemporaneous with the colonial period, were documented in European accounts of the time. For instance, the Maya civilization maintained written records, which were often destroyed by Christian Europeans such as Diego de Landa , who viewed them as pagan but sought to preserve native histories.
c. 9500 BC – Cordilleran and Laurentide Ice Sheets retreat enough to open a habitable ice-free corridor through the northern half of the continent (North America) along the eastern flank of the Rocky Mountains. c. 1000 BCE-1000 CE – Woodland Period of Pre-Columbian Native Americans in Eastern America.
North American archaeological periods divides the history of pre-Columbian North America into a number of named successive eras or periods, from the earliest-known human habitation through to the early Colonial period which followed the European colonization of the Americas.
Many pre-Columbian civilizations established permanent or urban settlements, agriculture, and complex societal hierarchies. In North America, indigenous cultures in the Lower Mississippi Valley during the Middle Archaic period built complexes of multiple mounds, with several in Louisiana dated to 5600–5000 BP (3700 BC–3100 BC).
The pre-Columbian era is the term generally used to encompass all time period subdivisions in the history of the Americas spanning the time from the original settlement of the Americas in the Upper Paleolithic until the European colonization of the Americas during the early modern period.
The colonial period lasted approximately three centuries, from the early 16th to the early 19th centuries, when Brazil and the larger Hispanic American nations declared independence. The United States obtained independence from Great Britain much earlier, in 1776, while Canada formed a federal dominion in 1867 and received legal independence in ...
Aztec calendar (sunstone) Mesoamerican chronology divides the history of prehispanic Mesoamerica into several periods: the Paleo-Indian (first human habitation until 3500 BCE); the Archaic (before 2600 BCE), the Preclassic or Formative (2500 BCE – 250 CE), the Classic (250–900 CE), and the Postclassic (900–1521 CE); as well as the post European contact Colonial Period (1521–1821), and ...
Pre-existing natural communities remained largely intact south of the glaciers, but saw an increase in dominance of pine and a now-extinct species of temperate spruce, (Picea critchfieldii). This area included many plant communities that rely on a lightning-based fire regime, such as the longleaf pine woodland.