Changes to Europe after World War I
The war officially ended when Germany agreed to lay down its weapons on November 11, 1918. In 1919, the victorious Allies, led by Britain, France, and the United States, met in Paris to decide the fate of the empires they had defeated. Their decisions transformed Europe's borders. The Austro-Hungarian empire was carved up into six new countries. One of these, the awkwardly named Czechoslovakia, would split into the Czech Republic and Slovakia in 1992. The former Serbia was combined with territories annexed from Austria-Hungary to form Yugoslavia, a national home for South Slavic peoples. It, too, disintegrated in the early 1990s, producing several small nations that exist in the Balkans today. The Soviet Union lost some of the Russian Empire's former territory to the new Baltic states and to Poland. Poland, along with France, got chunks of Germany. Czechoslovakia and Yugoslavia are gone, but the other new states persist today, so it's fair to say that World War I set the contours for the modern European state system.