Mountain Ranges
The so called White Armies.
The Sahara provided a barrier to invading armies. It offered the Egyptians protection.
Russia during the winter of 1941 and 1942.
The counterrevolutionary "White Armies" were one after the other defeated. The Bolsheviks won the Civil War and Russia became the Union of Socialist Soviet Republics.
After the rise of the "Bolshevik Revolution" in 1917-18, Russia as a whole was plunged into a period of general disruption and civil war, with phases of greater and lesser chaos dominating in various parts of the large country. Into the 1920s, "Red" and "White" armies fought to take control, with foreign armies and mercenaries also involved quite frequently.
mountain ranges
America and Russia both have strong modern armies but China has the largest and most technological military in the world.
When the armies fully surrendered
The armies in World War 2 were the U.S., Germany, Russia, Japan, and others.
1, Soviet Russia 2, France
China and Russia
The mongols were known as the Golden Horde
The so called White Armies.
When Hitler attempted to attack Russia his armies fell to the brutal winter just as Napoleon's troops when he tried to invade.
The Sahara provided a barrier to invading armies. It offered the Egyptians protection.
Russia during the winter of 1941 and 1942.
No. The Great Wall of China was built as a defensive barrier against invading armies.