Which statement best describes a similarity between the political systems in ancient greece and the roman republic? a. both were designed to protect existing feudal systems. b. both avoided centralizing political power in the hands of one person. c. both were based on principles established during the enlightenment. d. both reflected the philosophy of direct democracy.

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.