How did the Colombian exchange affect the Africa people

Select the correct answer. how did agricultural advances affect chinese society during the middle ages? a. it led to population growth. b. it decreased life expectancy. c. it lowered industrial operations. d. it resulted in more people moving to rural areas.

What were the shared risks of the signers of the declaration of independence were taking impending their names to the document?

What percentage of people in britain lived in cities in 1850? a.) less than 5% b.)between 6 and 10% c.) more than 20%