The people of sumer planted wheat and irrigated their fields in order to have a surplus of food. a. true b. false

False, they didn't realize how much of a surplus they would have. They were surprised. They ended up with more wheat than they expected.

I belive it's false :) :)

Jan van Eyck produced paintings that tackled the themes which include, religion, symbolism, materialism and spiritualism. He often painted the Virgin Mary.

Erasmus addressed some of these issues:
abuse of power in the Church, freedom of the people, belief in the sacraments