Answer:
Union, Maryland, Missouri, Delaware, and Kentucky
Explanation:
Hi! I think there's no image of the chart but I'd like to answer about the Columbian exchange that might be the answer. The Columbian Exchange started was the widespread of trading of Americans and Afro-Asians and was followed by the voyage of Christopher Columbus to the Americas in 1492. They were exchanging plants, animals, technology, ideas, diseases and human populations.
"The Third Crusade" is your most reasonable answer.
