Read the following chart, which shows the percentage of the world's gross
domestic product over time. Which of the following conclusions is supported
by the data?

i think the answer is a and i hope this ; ))

evaluate the evidence used to support it

explanation:

after the spaniards introduced horses to plains native americans, the lives of the tribes changed. tribes became less settled and sedentary. the horse allowed them to hunt animals such as bison or buffalo, and, instead of staying in one place, tribes began to be nomadic.