The issue of whether to permit slavery in the territories organized in this new land consumed Congress at the end of the 1840s. During the war, Congressman David Wilmot introduced the Wilmot Proviso, a proposal to ban slavery in any new territory acquired from Mexico. The measure passed in the House of Representatives but failed in the Senate.
Congress was also seeking resolutions for several other controversial matters. Antislavery advocates wanted to end the slave trade in the District of Columbia, while proslavery advocates aimed to strengthen fugitive slave laws. But the most pressing problem was California: the many emigrants who had flocked to the territory upon the discovery of gold in the late 1840s had forced the question of its statehood and status as a slave or free state.
The presidential election of 1848 determined which of these issues would be tackled first.
There would be Major conflict at first but as I understand it would be resolved
This region was also politically unstable as there were different ethnicities and there was also rising nationalism in the region. Nationalism brought about tensions. There was also rising Serbian nationalist groups. Combined with the brinkmanship of the European Powers the area became a fuse to the powder keg that Europe had become. The Balkans has strong Cultural, Religious, and language ties to the surrounding Empires but they were in small pockets making nation building difficult.
The answer is Leon Trotsky. He was born in Ukraine to rich Jewish farmers. On his last year in school, he was fascinated with Marxism and became a revolutionary. His power struggle against Joseph Stalin led to his banishment from the Soviet Union. He lived in Turkey, France, Norway and finally Mexico where he was assassinated by an agent of the Soviet Union's secret police.
In the Treaty of Guadalupe-Hidalgo, the United States "<span>C. paid $15 million for lands the Mexican Cession," although this cost was also to repay for suits against land encroachments. </span>