I believe the answer is cruel
C.) p<span>olio is a contagious *disease* that has mostly been eradicated.</span>
A play or drama. Could be a musical but it's more likely that your definition is a play/drama.
Chocolate was brought from the New World to the Old World after 1492. The Mayas and Aztecs of Central American had been cultivating it.
Also making the trip across the Atlantic after 1492: corn, tomatoes, potatoes, squashes, beans, avocado, chili peppers.