The eastern and western roman empire.
Viking used Viking ships to land in france
The United States came to the aid of South Korea at the head of a United Nations force composed of more than a dozen countries. Communist China joined North Korea in the war in November 1950, unleashing a massive Chinese ground attack against American forces. The Soviet Union also covertly supported North Korea.
The main Axis powers were Germany, Japan and Italy. The Axis leaders were Adolf Hitler (Germany), Benito Mussolini (Italy), and Emperor Hirohito (Japan).