<span>It dealt with a decent amount of friction between the centralized federal government and the state and smaller governments because the two were still adjusting to working together and also apart. Over the years, they began to learn to work together and also on their own to build the government we know today.</span>
A region conceived as "the Indian country" was specified in 1825 as all the land lying west of the Mississippi. Eventually, the Indian country or the Indian Territory would encompass the present states of Oklahoma, Kansas, Nebraska, and part of Iowa.
When Mexico achieved its independence from Spain in 1821, New Mexico became a province of Mexico, and trade was opened with the United States. ... Two years later, the Treaty of Guadalupe Hidalgo ceded New Mexico to the United States, and in 1853 the territory was expanded to its present size through the Gadsden Purchase.
