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This Day in American History

August 23

1 historic event on this date

Founding1775

King George III Declares Colonies in Rebellion

King George III issued the Proclamation of Rebellion, declaring the American colonies to be in a state of open rebellion against the Crown. The proclamation rejected the colonists' petitions for reconciliation and ordered British officials to suppress the revolt.

Why It Matters

The King's proclamation closed the door on peaceful resolution and pushed many moderate colonists toward supporting independence, making the Declaration of Independence nearly inevitable.

Explore the Principles Behind the History

Every event in American history connects to the founding principles. Discover the ideas that shaped these moments.

View the 28 Founding Principles