One important way the Persians controlled their empire was by:
O
A. destroying the cities of rival civilizations.
O
B. enslaving conquered peoples.
O
C. killing the leaders of other peoples.
O
D. allowing people to keep their local traditions.

Consider the following invention from the american industrial era. cotton gin – a machine that removed seeds from short-staple cotton which option explains how this invention contributed to the role of the united states as an emerging world power? a. it was in high demand abroad, as many european nations had begun farming cotton. b. it led to the decline of slavery in the south, which enhanced america’s international reputation. c. it freed up many slaves to become factory workers in northern cities, which improved the economy. d. it increased production efficiency of a us cash crop that was in high demand in other nations.