You mention in part one of Mr. Lincoln’s War that Jefferson believed there would eventually be multiple American federal republics. Can you tell me where to find more information on his thoughts regarding this?
Anyway, Jefferson made several statements in support of “separate confederacies,” decentralization, and secession throughout his life. In Virginia, he advocated something he called “ward republics.” In essence, Jefferson contended that a republic should be small enough that everyone could realistically participate in the political process.
In his 1801 inaugural address, Jefferson suggested that those who wished to secede from the Union should be free to do so, and he backed that up in several letters from that point forward (and of course this is not including the Declaration of Independence).
His statements, by the way, also echoed what many in the founding generation thought about Union in 1787 and 1788. Union was only possible if the central government concentrated on the general interests of the Union (commerce and defense) and left all else to the States.