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On This Day
America250
— 250 years since 1776. Explore two and a half centuries of American history.
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July 16
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Anniversaries in American history that fall on July 16.
1945 · Eras
Trinity atomic test
First nuclear weapon detonated in New Mexico
World War II
1945 · Events / Discoveries & Inventions
The Manhattan Project
The secret World War II program that built the atomic bomb
The Manhattan Project
1787 · Events / Milestones & Firsts
Great Compromise
The Connecticut Plan of 1787 that created the bicameral Congress and saved the Constitutional Convention
Great Compromise