Due to the fact that the first and third don't make sense, I think the answer should be the second.
Hope this Helps! :)
True, the Columbian Exchange is a term for the exchange of crops, animals and disease between the Americas and Europe and Africa. The definition of the Columbian Exchange is "the widespread transfer of animals, plants, culture, human populations, technology and ideas between the African and Afro-Eurasian hemispheres in the 15th and 16th centuries, related to European colonization and trade after Christopher Columbus' 1492 voyage."
It would be "b. Andreas Vesalius" who is <span>regarded as the founder of the study of human anatomy, since before his time the idea of human dissection was heavily frowned upon. </span><span />
The North and the South disagreed heavily on the topic of slavery. The North wanted it destroyed, but the South wanted it to spread. As time passed the tension built. One of the tipping points was when John Brown tried to start a revolution by stealing guns for the slaves from a weapons depot in the South. He was caught before anyone was hurt and sentenced to hang. The North call him a martyr, which enraged the South, since he had been planning to hurt and kill them.
The king! he is incharge of everything! ^-^
