Wrong.
Rebellions usually are an attempt to remove or usurp an established government. The Confederate States attempted neither. They withdrew, and desired to be left ALONE.
Not at all. Rebellions are an armed opposition to the established government for whatever reason be it to overthrow the existing government or to break away from it. The Founding Father's knew that, which is why we study the American Revolution, not the American Secession.
Usurp. That is what the southern state governments did. They tried to usurp the legitimate authority of the US government, and prevented it from collecting tariff duties that were its lawful due. Not to mention the theft of federal property at forts and arsenals.
Lies, theft, to continue their rights to torture and perversion. Such southern gentlemen.