Answer:
In spite of his own supporters' more extreme demands, Polk agreed to a boundary at the 49th parallel, giving the United States present-day Oregon, Idaho, and Washington, as well as control of the Columbia River.
Polk's battle cry was "Fifty-four forty or fight," which meant the United States would accept nothing less from the British than all of the Oregon Country, as far north as the border of Alaska.
Image result for President Polk had wanted to fight for the land all the way to the Alaska border. When given the chance to split Oregon Territory with the British, he took the deal at the 49th Parallel. What difficulties would a war in that area of the country in 1846 have caused? Explain.
Polk, invoked the popular theme of manifest destiny and appealed to voters' expansionist sentiments in pressing for annexation, and defeated the Whig candidate, Henry Clay. Polk then sent the British government an offer to agree on a partition along the 49th parallel (which had been previously offered).
Explanation:
