Three worldwide (pandemic) outbreaks of influenza. occurred in the 20th century: in 1918, 1957, and 1968. The. latter 2 were in the era of modern virology and most thor-. oughly characterized. All 3 have been informally identified. by their presumed sites of origin as Spanish, Asian, and.
Just south of the Vietnam Veterans Memorial Wall is the Vietnam Womenâs Memorial, which serves to commemorate the 265,000 women that served in the Vietnam War, many of whom worked as nurses.
Vietnam War. The Vietnam War was a long, costly armed conflict that pitted the communist regime of North Vietnam and its southern allies, known as the Viet Cong, against South Vietnam and its principal ally, the United States.