What did President Polk’s campaign slogan “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.

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

i think that the right answer is the aztecs