Tokyo is the capital of Japan!
:P
Merchants and traders who travel along these routes must stop at oases to replenish food and water supplies and this means that whoever controls an oasis also controls the trade along the route—making oases desirable to political, economic, and military leaders.
The great and all powerful Soviet Union, and then after 1949 the communist german party took controlled which was maintained by the United Soviet Socialist Republic (USSR). Also I should mention that the Allies wanted to split the city of Berlin up since it was fair.. So Berlin was split in 4 parts and thats why you hear the name "Berlin Wall" which was the Soviet Wall surrounding their side of the city..
This image is from the battle of Berlin won by the Soviet Union in 1945