In his "state of the union address" fdr uses a quotation by benjamin franklin, "we must all hang together, or assuredly we shall all hang separately." how does this quotation support fdr's arguments?

Explain how what you have just quoted displays persuasion through logic. For example, if it was a cause-effect quote you would first describe the cause then effect that is demonstrated in the quotation. On the other hand, if data/evidence is provided in lieu of a logical framework, note that.