The majority of Southerners who opposed the war were from the more economically prosperous coastal areas, where the cotton trade was most important. They argued that war with Britain would lead to a decline in the cotton trade, which would in turn lead to a recession in the South. They also feared that war with Britain would lead to an increase in the number of slaves who escaped from the South to British-held territory, such as Canada.
The majority of Southerners who supported the war were from the more rural areas of the South, where there was less economic dependence on the cotton trade. They argued that war with Britain was necessary to protect the United States' national honor and to expand its territory. They also believed that war with Britain would lead to a weakening of the British Empire, which would benefit the United States in the long run.
In the end, the United States declared war on Britain in 1812, but the war was not as one-sided as many Southerners had feared. The war ended in a stalemate in 1815, and the United States did not gain any new territory as a result of the war. However, the war did strengthen the United States' sense of national identity and helped to unify the country.