The United states help Panama declare independence from Colombia then negotiated for the canal
Sentence 2 should be followed by a citation. The reason why this sentence should be followed by a citation is because there needs to be proof that Truman did in fact feel this way. Usually this sentence would be a paraphrase or summary from a primary source. Without a citation, one could argue that this was not the way Truman felt.
Article of confederation served as the nation first constitution