What do all the islamic empires have in common? a. they used gunpowder brought from china. b. they all worked to promote the spread of islam. c. they had a policy of religious tolerance. d. their leaders were descended from genghis khan.

How would high tariffs hurt america? a. fewer immigrants would be able to move to america b. sales of american products to other countries would go down c. americans would sell more goods to other countries d. goods imported from other countries would cost less