During world war ii, conferences such as those held in tehran, yalta, and potsdam demonstrated that

During World War II, conferences such as those held in Tehran, Yalta and Potsdam demonstrated that the Allied powers came together to defeat Germany and divide it into four parts for sharing among themselves. These conferences also in favor of world peace, but on the contrary it gave birth to the cold war that lasted for about 50 years.

The answer would be political systems .