Why did it take so long for Texas to become a part of the US (what were people afraid of)?

Answer 1

Texas' path to becoming part of the U.S. was prolonged due to concerns over the expansion of slavery and the potential for conflict with Mexico. Many Northerners opposed the annexation because they feared it would increase the power of slave states in Congress. Additionally, the potential for war with Mexico, which still considered Texas its territory after its 1836 independence, created hesitation among some U.S. leaders. These political and social tensions delayed Texas' admission until 1845.