Napoleon's Concordat with the Catholic Church made people happy
because it

The Concordat of 1801 is a reflection of an agreement between Napoleon Bonaparte and Pope Pius VII that reaffirmed the Roman Catholic Church as the majority church of France and restored some of its civil status.

Explanation:

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.

north east because it has more forest