One of james k. polk's goals as president was to fulfill the manifest destiny of the united states. did he achieve this goal by the end of his term? a no, polk agreed to cede territory to mexico in the treaty of guadalupe hidalgo after fighting mexico to a stalemate. b no, polk failed to bring an end to the mexican-american war before the end of this term and the us did not gain territory. c yes, polk expanded us territory to the northern coast of north america by completing the purchase of alaska. d yes, polk expanded us territory and the country spread from the atlantic to the pacific by the end of his term.