Question: Analyze major changes and continuities in American attitudes towards land expansion in the period 1800-1848.
Document 1
Source: “Polk's Dream”, Edward Williams Clay, 1846
Document 2
Source: Letter from Thomas Jefferson to Robert Livingston, October 2, 1801
To Robert R. Livingston, Greeting: -, Reposing especial trust and confidence in your integrity, prudence and ability, I have nominated and by and with the advice and consent of the Senate, do appoint you the said Robert R. Livingston, Minister Plenipotentiary of the United States of America to the Republic of France, authorising you hereby to do and perform all such matters and things, as to the said place or office do appertain, or as may be duly given you in charge hereafter, and the said office to hold and exercise, during the pleasure of the President of the United States for the time being.
Document 3
Source: The Californian, 1848
Document 4
Source: Monroe Doctrine, December 2, 1823
The political system of the allied powers is essentially different in this respect from that of America.
This difference proceeds from that which exists in their respective Governments; and to the defense of our own...this whole nation is devoted. We owe it, therefore, to candor and to the amicable relations existing between the United States and those powers to declare that we should consider any attempt on their part to extend their system to any portion of this hemisphere as dangerous to our peace and safety.
With the existing colonies or dependencies of any European power we have not interfered and shall not interfere. But with the Governments who have declared their independence and maintain it, and whose independence we have, on great consideration and on just principles, acknowledged, we could not view any interposition for the purpose of oppressing them, or controlling in any other manner their destiny, by any European power in any other light than as the manifestation of an