Polk James Knox
Polk(pōk), James Knox 1795-1849.
The 11th president of the United States (1845-1849), whose term was marked by the Mexican War (1846-1848) and the establishment of the 49th parallel as the country's northern border (1846).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.