I think... It was "B" Entering the war on the side of GB
The Columbian Exchange was the widespread transfer of plants, animals, culture, human populations, technology, and ideas between the Americas and the Old World in the 15th and 16th centuries, related to European colonization and trade after Christopher Columbus's 1492 voyage
the correct answer here is D
D. Nobles stopped supporting the emperor.
The period of the warring states happened during the Zhou dynasty. it occured after the barbarians attacked the capital and ransacked it resulting to financial weakness. The zhou king could no longer support a large army and lost the support and control of the fiefdoms or states who started fighting against each other.
Assuming you're referring to the period surrounding the Civil War--one example would be that Republicans wanted to make slavery illegal, which would have "controlled" the private lives of slaveholders in the South.
On April 28, 1967, boxing champion Muhammad Ali refuses to be inducted into the U.S. Army and is immediately stripped of his heavyweight title. Ali, a Muslim, cited religious reasons for his decision to forgo military service (he didnt wanna go)
