JOHN POLK was the 11th US president who serve his people from 1845-1849.
The is the only sole president to run his office for only one term. He was also called as THE EXPANSIONIST during his era by settling claims to Texas and Oregon Territories. Among his great accomplishments includes the reestablishment of the Independent Treasury System, the reduction of tariffs, the acquisition of Oregon Country, and the acquisition of California and New Mexico from Mexico. His real name is James but often referred to by many with the name of JOHN POLK.