Fifty-four-forty or Fight
[fif-tee-fawr-fawr-tee, -fohr-]
U.S. History.
a slogan popular in 1846, especially among Democrats, who asserted U.S. ownership of the entire Oregon country, including the part that Great Britain claimed between 49° and 54° 40prime; N latitude.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019