How did the Columbian Exchange affect the African people

Answer quickly! correct answers only! how did an agricultural surplus relate to expanded trade during the high middle ages? a)trade increased because surplus crops could be traded. b)trade decreased because surplus crops were needed to feed local populations. c)trade decreased because surplus crops led to an oversupply of grains that could not be sold. d)trade increased regionally but decreased globally because trade networks had shrunk.

Why do drivers have difficulty seeing side traffic at t-intersections in rural areas?

2) based on the information, which is an opinion rather than a fact about immigrants to north america? immigrants