A sudden storm and a severe storm emerged to help the Japanese escape the critical situation before the Mongol invasion. According to the Guardian, in...
Not only founded the most powerful Mongol Empire in human history, Genghis Khan also left great military, political and religious achievements to his descendants. Our...
Favorable environmental factors aided agriculture, architecture, and eventually social order appeared earlier in ancient Mesopotamia. While human civilization flourished in many parts of the world,...
On March 24, 1959, the patented device “Microwave amplification with excited radiation”. Maser is the abbreviation of the expression Microwave Amplification by Emission of Stimulation...
During the Cold War between the United States and the Soviet Union, both powers invested mountains of money to develop military weapons, of which the...