In 1913, Europe was in a few countries.
After the “World War I” in 1919, the world’s pattern changed dramatically. The three countries of Britain, France and the United States organized the Paris Peace Conference after the war. Apart from discussing how to punish Germany, the Austrian-Hungarian Empire and other defeated countries, the rest The questions are focused on how to redefine Europe.
Under the leadership of the three countries, the German border was compressed, the Austrian-Hungarian Empire was disintegrated into Austria, Hungary, etc., Poland was restored, Estonia, Latvia, Lithuania and other countries became national states in accordance with the principle of national self-determination. The newly-created countries were mainly in the Austro-Hungarian Empire and the Tsar The establishment of the Russian ruins basically laid the embryonic form of today’s European countries.