20)which of the following is a byzantine empire accomplishment?

a. freeing russia from the golden horde

b. limiting the power of the boyars

c. making moscow the most powerful city in russia

d. blending christian religious beliefs with roman law

How does nafta affect relations between the united states and canada? a. it bans immigration between the two countries. b. it opens the borders between the two countries. c. it raises taxes on trade between the two countries. d. it allows free trade between the two countries.