USA HISTORY

Detailed explanation-1: -Mexico threatened war over U.S. annexation of Texas, and in Congress the issue of annexation inflamed debate regarding slavery’s expansion. After the Senate rejected an annexation treaty, Congress annexed Texas in 1845 by a joint resolution and declared war with Mexico the following year.

Detailed explanation-2: -On June 23, 1845, a joint resolution of the Congress of Texas voted in favor of annexation by the United States. The leaders of the republic first voted for annexation in 1836, soon after gaining independence from Mexico, but the U.S. Congress was unwilling to admit another state that permitted slavery.

Detailed explanation-3: -Constitutional scruples and fear of war with Mexico were the reasons given for the rejection, but antislavery sentiment in the United States undoubtedly influenced Van Buren and continued to be the chief obstacle to annexation. Texas withdrew the annexation offer in 1838; President Mirabeau B.

Detailed explanation-4: -The Texas minister to Washington proposed annexation to President Martin Van Buren in August 1837. The administration rejected the proposal, fearing reprisal from Mexico and the controversy that would follow the addition of another slave state.