Describe the feudal structure and relationships including vassals, lords, knights, fiefs and serfs.

increasing defense spending.

explanation:

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )

c. free trade can lead to low pay for workers in poorer countries.

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.