Browse Historical Events by Day: What Happened on June 21st?

New Hampshire ratifies the U.S. Constitution and becomes the 9th State and last necessary state of the original 13 colonies to ratify the U.S. Constitution. More

The Constitution became the official framework of the government of the United States of America when New Hampshire became the ninth of 13 states to ratify it, thus replacing the post-Revolutionary War Articles of Confederation. More

A 7.7M Earthquake in Iran, near the Caspian Sea, kills an estimated 50,000 people and injures another 135,000, leaving more than 500,000 homeless and destroying three cities (Rudbar, Manjil, and Lowshan) and 700 villages.