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'''James Knox Polk''' was the 11th [[president]] of the [[United States]].  He lived from 1795 to 1849.<ref>[[Encyclopedia of Presidents James K. Polk]] by Dee Lillegard, Children's Press, 1988. </ref>  He was elected in 1844 as a Democrat and served as president from 1845-1849.

'''James Knox Polk''' was the 11th [[president]] of the [[United States]].  He lived from 1795 to 1849.<ref>[[Encyclopedia of Presidents James K. Polk]] by Dee Lillegard, Children's Press, 1988. </ref>  He was elected in 1844 as a Democrat and 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 imminent Mexican attack on [[Texas]].  Unfortunately, Polk was unable to prevent several thousand Mexicans from entering the country and gaining citizenship when the United States annexed [[California]] and [[New Mexico]].  Polk has also been criticized for accepting a compromise settlement with [[England]] over the [[Oregon]] Country instead of pursuing a preventive war with [[Canada]] in order to gain all of it.

Polk launched an invasion of [[Mexico]] to prevent an imminent Mexican attack on [[Texas]].  

Polk declined to run for a second term.  He shortly afterwards retired at Polk Place, Nashville where he died on June 15, 1849.  He was the first President to be outlived by his mother.  <ref> [[Encyclopedia of Presidents James K. Polk]] by Dee Lillegard, Children's Press, 1988. </ref>

Polk declined to run for a second term.  He shortly afterwards retired at Polk Place, Nashville where he died on June 15, 1849.  He was the first President to be outlived by his mother.  <ref> [[Encyclopedia of Presidents James K. Polk]] by Dee Lillegard, Children's Press, 1988. </ref>