When european nations established colonies in africa in the late 1800s, they

controlled colonies’ government but gave colonies economic control.
allowed colonies to run their government but held economic control.
exercised complete economic and political control over the colonies.
negotiated with colonies to determine economic and political control.

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.