1.85 million people.
2.Four empires collapsed: the Russian Empire in 1917, the German and the Austro-Hungarian in 1918, and the Ottoman in 1922.
3.The world map was redrawn and reshaping of many borders in Europe. Therefore, the collapse of the Russian Empire created Poland, the Baltics, and Finland. The Austro-Hungarian Empire dissolved into Austria, Hungary, Czechoslovakia, and Yugoslavia. The German Empire became Germany, and Germany lost substantial territory outside Europe.
4.a)To maintain international peace and security.
b) To develop friendly relations among nations on the basis of equality and the principle of self-determination.
c) To foster worldwide cooperation in solving economic, social, cultural and humanitarian problems.
d)To recognize the fundamental rights of all people.
5.August 18, 1920