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The History of the United States and Mexico 1821-1848


Here is the timeline we are working on in Social Studies.  I’ve put in some notes that you can use for extra practice in learning the main ideas, vocabulary, and spelling.  You can also use it to help you study for tests.



1821---   In 1821, Mexico won its independence from Spain.

The leaders of Mexico and the United States met to talk about American settlers moving into the area of Texas.


  1. Americans had to obey Mexican laws
  2. Americans would learn Spanish


Important Differences between the United States and Mexico in 1821

  1. Slavery was illegal in Mexico
  2. In Mexico, women had the right to vote and the right to own land


Something to think about

    Where in the United States was slavery still legal?

    Where do you think most of the American settlers come from, the north or the south?

    What could be a possible conflict between the settlers and the Mexican government?



1830---  By 1830, more than 20,000 American settlers were living in Texas.  Tension   grew between the Americans and the Mexican government.  Some Americans began talking about independence.


1836---  Texas declared independence from Mexico.

The president of Mexico led an army to punish the Americans.

Mexican troops defeated the Americans at the Alamo.   The Alamo was near San Antonio. 

General Sam Houston and 700 troops attacked the Mexican troops.  They captured  the president of Mexico.  They let him go when he agreed to independence for Texas.


There was disagreement between the United States and Mexico over the border.  Was it the Rio Grande or 150 miles north of the river?


1846--- The United States declared war against Mexico.


1848---Mexico City was captured by the Americans.  4,000 Mexicans died defending their capital.  Mexico surrendered.


The Treaty of Guadalupe Hidalgo

  1. The land that is now California, New Mexico, and Arizona was ceded  to the United States.
  2. The United States gave Mexico $15,000,000.