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Was the 11th [[president]] of the [[United States]]. He served as president from 1845-1849.

'''James Knox Polk''' was the 11th [[president]] of the [[United States]]. He served as president from 1845-1849.

 

Polk was an early pioneer of the [[Bush Doctrine]] of preventive war, launching an invasion of [[Mexico]] to prevent an immenent Mexican attack on [[Texas]].  Unfortunately, Polk was unable to prevent several thousand Mexicans from entering the country when the United States annexed Texas, [[California]] and [[New Mexico]].

[[Category:Biographies]]

[[Category:Biographies]]

[[Category:Presidents of the United States]]

[[Category:Presidents of the United States]]