The greatest geographic obstacle to the spread of Islam in the 7th Century was

fighting to keep abortions legal

well they usually trade goods for money. they mostly trade goods with other nations

sample response: the united states has applied government principles from many ancient civilizations. in rome, power was held by elected officials on behalf of the people, and senators voted on important matters. this is a system of representative democracy that we use today. citizens also participate directly by voting for themselves on issues. this system mirrors the direct democracy used in athenian government.