Why did the Mongols fail to conquer Japan in 1274 and 1281

What was the name of the theory that said that if one country in a region fell to communism, others would surely follow? 1) domino theory 2) arms race 3) brinkmanship 4) containment theory

Who did not believe that land could not be owned

What are the roles of the fcc in the us? check all that apply. regulating the country’s communications infrastructure ensuring communication technology is compatible with existing technol