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  Who:Mexicans
 What: Fought Spain for their independences
 Where: in Mexico
 When: September 16, 1810
 Why: Because they disliked the political and economic reforms put in place by Spain.
 So What: the modernize there colony
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  Who: Texas revolution
 What:Armed conflict between Mexico and settlers in Texas.
 Where:Texas
 When: Octuber 2,1835
 Why:Mexican president and General Antonio Lopez abolished federal constitution.
 So What: Asecession movement and violence in several Mexican states.
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  Who:James Polk
 What;wanted to purchase New Mexico and call from Mexican government,also wanted a border to seperate two countries .
 Where:Rio Grande
 When:1845
 Why: Mexican government refused to do any deals with united states.
 So What: making Texas part of the U.S.
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  Who:President Polk
 What:Declare war on Mexico and sent troops under General kearny
 Where:New Mexico and California
 When:in 1846
 Why:to secure land to fulfill railroad expaansion in the west.
 So What:the boundary between the United States and the Golf of Mexico was extend to el Rio Grande.
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  Who:Reies Lopez Tijaneria\
 What:Mexico gave up almost half of their territory
 Where:Texas border at the Rio Grande
 When:1848
 Why:to provide protection of the property and civil rights
 So What:Mexicans had lost their lands.