Leading Up to the Mexican War By paez.a Dec 4, 1819 missouri compromise Jan 1, 1821 texas became a province of mexico Dec 1, 1829 mexican government abolished slavery Dec 4, 1830 mexican government prohibited immigration Apr 17, 1835 anglo population grew to 30,000 plus Oct 5, 1835 texan settlers rebelled Apr 7, 1836 santa anna captured at the battle of san jacinto Dec 4, 1845 john tyler pushed through congress a resolution annexing texas Mar 4, 1846 president polk stationed general zachary taylor on the dipsuted territory along the rio grande Apr 25, 1846 general taylor was informed that the mexican army had crossed the rio grande and killed 16 of his men May 9, 1846 slidell returned to washington and informed polk that he was rebuffed May 11, 1846 polk submitted his war message claiming american blood had been spilled on american soil