A historian could best use this map to study which topic?

3, Decolonization

Explanation:

not sure if its 3 because the picture was unclear

b. used to hunting for their food.

- "a new era of american politics began with jackson's election in 1828, but it also completed a grand social experiment begun by the american revolution. nevertheless, jacksonian democracy represented a provocative blending of the best and worst qualities of american society."

< 3