USA HISTORY

Detailed explanation-1: -The annexation of Texas contributed to the coming of the Mexican-American War (1846-1848). The conflict started, in part, over a disagreement about which river was Mexico’s true northern border: the Nueces or the Rio Grande.

Detailed explanation-2: -Note: That treaty was submitted to the Senate on April 22, 1844, with the presidential message of the same date (Executive Journal, VI, 257-61); and it was rejected by the Senate by a vote of sixteen ayes to thirty-five noes on the following June 8 (ibid., 311-12).

Detailed explanation-3: -By its terms, Mexico ceded 55 percent of its territory, including the present-day states California, Nevada, Utah, New Mexico, most of Arizona and Colorado, and parts of Oklahoma, Kansas, and Wyoming.

Detailed explanation-4: -The correct answer is Awadh. Awadh was annexed by the British under the pretext of ‘misgovernment of the Nawab.

Detailed explanation-5: -Mexico considered the annexation of Texas as an act of war. After a series of border skirmishes, President Polk asked Congress for the war declaration because, under Article I, Section 8 of the Constitution, only Congress could declare war.