Historical Boundaries and Ideas

The United States'' boundaries have expanded over the centuries—and at the same time, Americans'' ideas about their country have grown as well.

The Shaping of the Nation

The nation the world knows today was shaped by centuries of thinkers and events.

The Civil War and Its Impact

The Civil War brought an end to the terrible practice of slavery—but it also left deep wounds across the United States. As you learn more about this war''s conflicts, you will gain a better understanding of what makes America the nation it is today.