What made it harder to live in sumer than in the zagros foothills?

The aspect which made it harder to live in Sumer than in the Zagros foothills was that, Sumer lacked natural barriers such as hills, mountain ranges, or different land forms or water forms around it to keep out enemies from Sumer territory. The Sumer territory was found near the Rivers Tigris and Euphrates, though it is found between two rivers, this territory has been conquered by a different civilization/empire

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one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.

b

explanation: