Answer:
Agreeing to a border along the 49th parallel.
Explanation:
James K. Polk was a candidate from Tennessee that was not known to most Americans and he was the responsible for created the “fifty-four or fight” slogan. Despite of that, he was secretly willing to compromise and not go into war. And in June 1846 Britain proposed splitting Oregon at the 49th parallel, Polk agreed with that and war was avoided.
On what you are going to do and where you will take your dynasty
The first and the last indicate it's a reliable source.
