The worst epidemic in American history killed over 600,000 Americans during World War I.
While the U.N. debated strategies for control of atomic energy, the U.S. Navy was preparing for nuclear tests on Bikini Island.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
In the Philippines, Army Rangers liberated 513 prisoners of war three years after the Bataan Death March.
From the Revolutionary War to Operation Desert Storm - newly discovered letters read by celebrity actors tell of courage, longing, and sacrifice.
When two passenger ships collide off Nantucket in 1909, 1,500 people rely on 26-year-old Jack Binns to operate a new technology - wireless telegraphy - to save them all.
In the early 1830s, Texas, ruled by Mexico, held 20,000 U.S. settlers and 4,000 Mexican Tejanos, forcing residents to pick sides.
After 18 years of struggles, the Golden Gate Bridge opened on May 27, 1937.