What did a castle serve as during times of war? a. a church b. a town square c. a fort d. a school

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation:

b. young children below the minimum age were working

b. the treaty of ghent, which ended the war, had already been signed.