A supporting text may be the opening paragraph of a case study.
the concluding paragraph of a case study.
comparing and contrasting a case study.
a quote providing evidence in a case study.

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.

because he created electricity