What would be the best title for this map

A.) The Industral age

B.) The Columbian exchange

C.) The protestant reformation

D.) The transAtlantic slave trade

its actually B just took the test

Explanation:

This arrows on this map shows the process known as The Columbian Exchange. This exchange of plants, animals, and diseases between Europe and the Americas resulted in many new foods in both areas, but also many deaths in the "New World" due to small pox, measles, and influenza.

after defeating german forces in north africa allied leaders turned their attention to "italy," since this was the location that made the most geographic sense before invading northern europe via france.