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This Day in American History

December 18

1 historic event on this date

Founding1787

New Jersey Ratifies the Constitution

New Jersey became the third state to ratify the U.S. Constitution, doing so unanimously. New Jersey had advocated strongly for equal representation of states during the Constitutional Convention, leading to the Great Compromise creating the Senate.

Why It Matters

New Jersey's unanimous ratification reflected the success of the Great Compromise in balancing the interests of large and small states, a principle central to American federalism.

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