Missouri never joined it, but it was admitted to the Confederacy in 1861. It and Kentucky share this "admitted but never joined" status -- had the war gone the

Missouri never joined it, but it was admitted to the Confederacy in 1861. It and Kentucky share this "admitted but never joined" status -- had the war gone the other way, the Missourian government-in-exile would have been legitimized (and in fact, the elected Governor of Missouri was pro-Confederate; the only reason there was a Union-sympathizing Governor was because a Union general chased all the rebels out of the capital). "Missouri was never a member of the Confederacy" is a technicality rather than an honest assessment of sympathies and prevailing politics in the state.