Periods in American history

before 1607

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Before Europeans began to settle in North America, people here built vast and complex communities and trade networks.

1607 - 1754

1754 - 1800

The formation of the United States was characterized by conflict and compromise.

1800 - 1848

1848 - 1877

1877- 1898

1898 - 1945

1945 - 1980

1980 - present