Amelia Earhart was 39 when she disappeared.
The people of that generation had little intrest in the problems and crisis of the larger world
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.
They either went in hiding or left the country