1845-1849 | Buchanan served as secretary of state under James Polk. This came at a time of great national expansion, with the U.S. nearly doubling in size during Polk's term.

I drove just 15 miles west to the prosperous town of Pineville. Located within the municipal limits are the 21 acres that comprise the President James F. Polk State Historic Site.

James Buchanan, the 15th president of the United States, spent much of his adult life in Lancaster – including the last 20 years at Wheatland.We went to LancasterHistory to learn more about the ...

But Bush also singled out James K. Polk for praise, a Democrat who served four years in the 1840s, the Des Moines Register reported on Monday.