約翰昆西亞當斯擔任國務卿期間
John Quincy Adams as Secretary of State

1823年的「門羅主義」（Monroe Doctrine）是相當聰明的一項決策，避免歐洲殖民主義在未來有任何染指美國的可能，但事實上在此之前，已有「泛大陸條約」（Transcontinental Treaty）的簽訂。

該條約被許多人視為亞當斯以及美國在外交上最大的勝利，該條約於1819年2月22日於西班牙籤訂，並於1821年2月22日通過認可。這項協定是範圍廣及美國全國領土的創舉。該協定包含的範圍有哪些地方呢？

The Monroe Doctrine of 1823 was regarded as a very smart move that forbade further European colonization of the Americas, but preceding it was the "Transcontinental Treaty." This treaty was considered by many to be Adams's and the country's greatest diplomatic victory. It was signed with Spain on February 22, 1819, and ratified February 22, 1821. It was pioneering because of the far-reaching territory the U.S. acquired through it. What territory did this include?

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