What is significant about the slogan, "all oregon or none! fifty-four forty or fight? " a. it was used by great britain to claim the oregon territory. b. it was the democratic slogan for the presidential election of 1844. c. it was one of jackson's campaign slogans.

b. It was the Democratic slogan for the presidential election of 1844.

Explanation:

Polk was the flag bearer of the democratic party in the election of 1844. This was a period when U.S was conflicting with Britain over the ownership of the Oregon territory.

Polk named the struggle; 'fifty four, forty or fight' to mean, the location of Oregon as a whole, which, if not given to the U.S would result to a fight to get it.

This, is the slogan that made the democratic party acceptable among the people leading to their subsequent victory in the 1844 election.

"they had a large area of land that they owned."

a memoir is the correct answer