The U.S. and the Soviet Union race to build the hydrogen bomb during the Cold War, thus beginning the nuclear arms race.
How five abolitionist allies turned a despised fringe movement against chattel slavery into a force that literally changed the nation.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.
Originally settled as a mail stop, Las Vegas changed from an Old West vacation town, to a mafia haven, to the "Atomic City" and "Sin City."
A brilliant scientist, Oppenheimer was tasked with the development of the atomic bomb during World War II.
The U.S. government's response to the Holocaust was slow and fueled by complex social and political factors.
The legal efforts by a team of African American lawyers to eradicate segregation ultimately led to the landmark Brown v. Board of Education in 1954.