How did the Columbian Exchange affect global population?

theodore roosevelt 26th u.s. president : i admire his energy and passion. he was a fundamentally good man, brilliantly intelligent, possessed of extraordinary will and ability, supremely self-confident, bold, egalitarian, idealistic…. , lord, can we have him back?

they were all fought in the middle east during ww1

answer; (c) slaves brought to the americans from africa;