What did “Fifty-four Forty or Fight” mean?

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. Polk won the Presidency and took office in 1845.

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. Polk won the Presidency and took office in 1845.

Explanation:

lucky i still remember lol

b: the establishment clause  

b: socialism