"Where, where was the heroic determination of the executive to vindicate our title to the whole of Oregon-yes sir, 'THE WHOLE OR NONE'[?] ... It has been openly avowed ... that Oregon and Texas were born and cradled together
in the Baltimore Convention; that they were the twin offspring of that political conclave; and in that avowal may be found the whole explanation of the difficulties and dangers with which the question is now attended .... I maintain "l. That this question ... is .... one for negotiations, compromise, and amicable adjustment.
"2. That satisfactory evidence has not yet been afforded that no compromise which the United States ought to accept can be effected.
"3. That, if no other mode of amicable settlement remains, arbitration ought to be resorted to .... "
-Robert C. Winthrop, speech to the House of Representatives, "Arbitration of the Oregon Question," January 3, 1846.
Winthrop suggests that Polk's slogan of "Fifty-four Forty or Fight!" was based mainly on which of the following attitudes?