The Manhattan Project changed the course of global history.

The Opium Wars affected trade between China and Britain.

Fact #1174 · History

The Mayan civilization developed a complex calendar system.

Fact #1145 · History

The Persian Empire established an efficient administrative system.

Fact #1147 · History

Knossos was a center of the Minoan civilization.

Fact #1646 · History

Operation Paperclip brought German scientists to the United States after World War II.

Fact #1042 · History

The Persian Empire maintained a large professional army.

Fact #1432 · History

War chariots were used in several ancient civilizations.

Fact #1437 · History

Ancient siege towers were used to scale city walls.

Fact #1447 · History