Anonymous
Anonymous asked in Arts & HumanitiesHistory · 1 decade ago

history of the United States?

How did the settlement of the Mexican American War change the map of the United States? and the compromise of 1820

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  • Arbie
    Lv 6
    1 decade ago
    Best Answer

    The primary thing it did was give what remained of what is now the continental United States, except for the Gadsden Purchase, to the U.S. It also established the border as the Rio Grande, not the Rio Nueces or the Sabine River. The United States gained Colorado, Utah, California, Nevada, Arizona, and New Mexico.

    With these additions, the compromise of 1820 no longer was tenable -- the lands south of the southern border of Missouri technically could have become slave regions, but the area is too dry for the kind of farming which made slavery profitable. Thus, a new compromise was needed, and it was the violation of this compromise by the Democrats (according to John Sherman) which sparked the Civil War.

    Source(s): John Sherman, Forty Years in Congress... 2 vols. (1891)
  • 3 years ago

    1820 was Missouri - Maine and the 36-30 slave-free boundary: the south was quite nervous about matching free states upon admission to the union. The cotton (and thereby associated slave trade) economy could not possibly be extended to (now) New Mexico and Arizona. Texas was setup to be split into 5 states (Florida 2 for same reason): to keep the Senate count balanced. It was also thought Cuba could be acquired and sliced into slave states.

  • 1 decade ago

    To answer the question for myself - I wrote a book "State Boundaries of America." Texas wanted to join America after its independence in 1836 ---- since that would've ticked off Mexico, Texas entry was delayed until 1850.

    1820 was Missouri - Maine and the 36-30 slave-free boundary: the south was quite nervous about matching free states upon admission to the union. The cotton (and thereby associated slave trade) economy could not possibly be extended to (now) New Mexico and Arizona. Texas was setup to be split into 5 states (Florida 2 for same reason): to keep the Senate count balanced. It was also thought Cuba could be acquired and sliced into slave states.

    My point for writing the book was to ascribe, from original sources, every state line formative text.

    Hope this helps - the subject is involved.

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