Need help with this history work

i really really really really really really dont know

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.

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.