What step did China take during the Ming dynasty to isolate itself from the rest of the world? It banned Christian missionaries from China.
It tried to control trade by using permits and limits.
It expanded its naval fleets to protect itself.
It entirely prevented smuggling by using military force.

the answer is B, but i could not find this question to answer on

Which statement does not accurately describe the columbian exchange and its consequences? a. wheat became a major crop in north america where it had never existed before. b. millions of africans were kidnapped into slavery to provide labor for profitable crops. c. cattle, sheep, chickens, and pigs were brought to europe for the first time. d. spanish conquistadors brought diseases with them and native peoples begin dying.

How have a past president and our current president abused the powers granted to the president of the united states by the constitution and the people ?

What championed nationalism and denounced nullification