Supply & Demand. More crops mean more job opportunities. More job opportunities & food mean more people. More people means more money. Economic growth.
They traded things like information and spices, new diseases were brought over, and I imagine religious views were shared too!
Treason is the only crime specifically defined in the Constitution. According to Article III, Section 3, a person is guilty of treason if he or she goes to war against the United States or gives “aid or comfort” to an enemy. So in short words, treason.