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Adams-Onis Treaty
A treaty between the US and Spain that gave Florida to the US and developed a boundary to the Southwest that belonged to Spain. -
Mexico Gains Independence
Mexico liberates itself from Spain. -
US-Mexico War Begins
The war began as it looked to define America's territory. It resulted in the acquisition of the current American southwest states and the US further demonstrated their might. -
Treaty of Guadalup Hidalgo
The treaty ended the US-Mexican War. The US was granted everything north of the Gila River in exchange for $15 million. -
Gadsden Purchase
The Gadsden purchase was an exchange of $10 million for parts of Mexico that would now become part of Arizona and New Mexico. -
Passage of the 14th Amendment
The 14th amendment included a citizenship clause that granted citizenship to people born within the US. -
Border Control Established
The US started the creation of a border control that looked to deter immigration into the US. -
Mexican Revolution
At the start of the Mexican Revolution many Mexicans fled into Mexico. -
Arizona Becomes a State
Arizona joins the union and is the 48th state. The last of the continental states. -
Immigration Act of 1921
This act was targeted mostly at restricting the immigration of Eastern and Southern Eurpeans. At this point you can start to see a movement towards keeping the borders secure. -
Arrest of Illegal Immigrants
For the first time, illegal immigrants are subject to arrest within the US. -
Operation Wetback
The US deports 3.8 million Mexicans. This was a response to decreasing job numbers and excessive immigration. -
End of Bracero Program
This program allowed Mexican men to come to America on short-term work visas. -
Anti-Bilingual Initiative
The Anti-Billingual Initiative made Arizona schools "english only." -
The Secure Fence Act of 2006
This act granted the building of 700 miles of fence along the border of Mexico. -
Arizona Law SB 1070
This law allowed officers to demand proof of citizenship. The law has been challenged and its' constitutionality has been in question.