Prospectors rushed to California and Colorado following gold discoveries in 1848 and 1859.
Prospectors rushed to California and Colorado following gold discoveries in 1848 and 1859.

The woman suffrage movement officially began at this meeting in Seneca Falls, New York, in 1848.
The woman suffrage movement officially began at this meeting in Seneca Falls, New York, in 1848.

The United States and its allies airlifted supplies
The United States and its allies airlifted supplies

When North Korea invaded South Korea in 1950, U.S.-led United Nations forces responded.
When North Korea invaded South Korea in 1950, U.S.-led United Nations forces responded.

Millions of World War II and Korean War veterans furthered their education, thanks to the GI Bill.
Millions of World War II and Korean War veterans furthered their education, thanks to the GI Bill.

Through the North Atlantic Treaty Organization (NATO), the United States and its European allies pledged mutual defense and peacekeeping.
Through the North Atlantic Treaty Organization (NATO), the United States and its European allies pledged mutual defense and peacekeeping.

The 1950s witnessed a rush to the suburbs, with new housing developments like Levittown, Pennsylvania.
The 1950s witnessed a rush to the suburbs, with new housing developments like Levittown, Pennsylvania.

The Interstate Highway Act of 1956 created a nationwide network for fast, uninterrupted travel.
The Interstate Highway Act of 1956 created a nationwide network for fast, uninterrupted travel.

Ambassador Adlai Stevenson presented evidence of Soviet missiles in Cuba to the U.N. Security Council, 1962.
Ambassador Adlai Stevenson presented evidence of Soviet missiles in Cuba to the U.N. Security Council, 1962.

Thousands joined Martin Luther King, Jr. on the National Mall in 1963 to demand jobs, freedom, and civil rights for African-Americans.
Thousands joined Martin Luther King, Jr. on the National Mall in 1963 to demand jobs, freedom, and civil rights for African-Americans.
