The decision to divide Germany into four zones of occupation was made by the Allies (United States, Soviet Union, Britain, and France) at the end of World War II. It was primarily done to prevent Germany from becoming a unified and potentially powerful country that could pose a threat to European security, as it had done in the past. Additionally, the division allowed the Allies to maintain control and oversee the process of denazification and reconstruction in Germany.
Germany was divided (assuming you are referring to east and West Germany divide after WWII) was the result of two superpowers conquering a nation and the subsequent rivalry between the conquering powers as to how the new government should be run.
World War caused Europe to divide. By Omar Adam
* Churchill, Roosevelt and Stalin agreed to form a United Nations * How to divide up Berlin between the Allies * Stalin agreed to enter war against Japan when Germany was defeated * Free elections in Poland
to divide postwar Germany into four zones
West Germany and East Germany.
So all the countries could have a part of Germany. Usually, the invading country would decide what to do with this. Since there were many countries in the Allied powers, and the main contributors had different ideas of what to do with it, they had to divide Germany up to be fair.
The Soviet Union (USSR) divided Poland with Germany.
The French, Americans, Russians and Britons decided to divide Germany into zones when they met at the Yalta Conference.
Divide it into four zones
The Iron Curtain (the wall is Germany that used to divide east(?) and west(?) Germany).
A second front was invented when the Russians wanted Germany to divide into two and come from different directions when invading the British, Americans and Canadians. If Germany didn't do this than they would be attached unopposed.