c. 1300: in southern Ontario, archaeological evidence indicates significant social and economic transformation among Iroquoian-speaking populations[4][5]
c. 1300–1400: The expansion of Thule groups across the Arctic coincided with the decline and disappearance of the Dorset culture.[6]
c. 1400: The Blackfoot Confederacy was formed when the Siksika and related Plains groups joined together in an alliance.[7]
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