U.S. Territorial Expansion

Journey through American history and discover how the United States grew from 13 colonies to a continental nation

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1776

Original Thirteen Colonies

The original thirteen British colonies declared independence and formed the United States of America.

Total Area

360,000 sq mi

Cost

Revolutionary War

Territorial Growth Visualization

1776
1783
1803
1819
1845
1846
1848
1853
1867
1898
1898
1917

Each block represents a territorial acquisition. Current: Original Thirteen Colonies

1776

Start of expansion