Romanians trace their history back to 300 B.C. But Romania did not become an independent, unified country until 1861. During most of the time in-between, various foreign peoples ruled all or part of Romania. In World War I, Romania remained neutral at first, but in 1916, it joined France, Great Britain, and the other Allies in their fight against the Central Powers (chiefly Austria-Hungary and Germany). The Allies won the war, and Romania received the territories it wanted as part of the peace settlement. As a result, Romania about doubled in size and population. For the first time, Romania's territory included almost all the land where large numbers of Romanians lived.
World War II began in Europe in September 1939 as a struggle between Germany and the Allies--a group of nations led by France and Great Britain. Romania remained neutral at first. By June of 1940, Germany had gained a great military advantage over the Allies. Germany allowed Hungary to take northern Transylvania from Romania. The Soviet Union took part of northeastern Romania. The Communists declared Romania an "independent people's democracy." But Romania was a Soviet satellite (country controlled by the Soviet Union). In 1948 and 1952, Romania adopted constitutions that praised the Soviet Union. Romania's government, educational system, and other institutions were modeled on those of the Soviet Union.