The american settlers were unhappy with the Mexican law of slavery. After some battles, the president of Mexico signed the treaty of Velasco 1836 and declared the independence of Taxes. (Nardo 16) The president at the time, James K. Polk declared war on Mexico. America gained an enormous amount of land and this is where american citizens in different regions of America begin to split up in political reviews leading the preface of civil war. Treaty of Guadalupe was forced on Mexico in 1848 to gave up claims to texas about the Rio Grande River and gave California and New Mexico to US. “On the other hand, the war and dissent left behind sectional strains that began the process of breaking the old bonds of union, especially the national political parties, and replacing them with sectionalized parties. In the fierce struggles occurring over the organization of the Mexican cession, the Free soil party was born, the crisis of 1850 occurred, and the Republican party was foreshadowed, which , when it triumphed in 1860, led to the secession of the Southern states. These effects illustrate an old truth: that moral issues are not easily quiet when they are as basic as those raised by Polk in 1846.” (Frederick …show more content…
As time goes on, the northern states became increasingly industrialized, eliminating the need for slave labor. As slavery became less necessary in the North, Northerners began to look at this institution differently. They began to see that is was morally wrong for one person to own another.” (Nardo 39) The north did not favor the war and they simply believed that the war was “waged solely for the detestable and horrible purpose of extending and perpetuating American slavery throughout the vast territory of Mexico” (Hakim 86). Since the beginning of the war, the Northerners were against it. The Northerners argued the opposite of the southerners, they believed that these states should not be slave states. They supposed that these states should be free states. That would mean these slave states would have more representation and majority in the congress. The Whigs were one of the major political parties of the 19th century of America. It was first used in Scotland and England but in 1830s President Andrew Jackson reestablished the term of Whig. The Whigs party contained republicans and some former members of anti-Masonic party. However, even the Whigs party was divided between sections of South and North. “The Northern Whigs became divided into conservatives and radicals. the conservatives emphasized the fraud and aggressiveness of the war. They wished to avoid the added