<span>That tension came to a head in Korea. Overshadowed by WWII, the Korean War has often been called America's "forgotten war," though like Vietnam it was part of a larger Cold War struggle to extinguish communism. In 1950, North Korean communist troops invaded South Korea, which was an American ally.</span>
"<span>the assassination of Archduke Franz Ferdinand" is thought to be the spark that lit the powder-keg </span>of war at the beginning of the 20th century. A dense web of alliances was set off from this shooting.
