What reason did President James K. Polk give when he asked Congress to declare war against Mexico?

Declarations of war, May 1846

His message to Congress on May 11, 1846, claimed that "Mexico has passed the boundary of the United States, has invaded our territory and shed American blood upon American soil."

Explanation:

Polk used a sneaky, yet clever plan to get the Americans to go to war with Mexico. He wanted Mexico to strike first and declare the war because the two countries argued over the Texas and Mexico border. The United States thought it was the Rio Grande that separated the two countries, while Mexico thought differently.

the emancipation proclamation was the aim of the war change to include the freeing of slaves in addition to preserving the union. the 13th amendment, which abolished slavery in the u.s. was passed on december 6th 1865.

as promised, lincoln waited to unveil the proclamation until he could do so with success from the union military advance. on september 22nd 1862, after a victory at antietam, he publicly announced a preliminary emancipation proclamation, declaring all slaves free in the rebellious states as of january 1st 1863.

i would think the answer is between b and d i would say d sorry if wrong