Tsarist Russia in World War I and the Soviet Union in World War II.
about 14 percent
Russia
Russia
According to me the Germans lost the most land post in WW1 because in the end the central powers were defeated by the allied powers which had been consisted of Russia Italy France England USA & Japan.
The U.S lost the least land
Russia
Germany!
Russia. :)
spain
Germany
Spain lost the War and its New World Empire.
the french
Every country lost: there is no winner in a war. A couple lost more than the others; Russia and Germany were quite heavily damaged by the war and its aftermath.
Germany
In 1923 when germany lost land
Japan lost land in World War 2 as they lost the war. During the war they took over parts of China, Korea and a large number of islands across the Pacific including the Philippines.