Suppose that, for whatever reason, the US government provides no military resistance toward the states which seceded prior to Sumter. (Maybe a Southern appeaser is elected in 1860 instead of Lincoln, or what have you.) This then results in Fort Sumter being surrendered without a fight. In such a scenario, would Arkansas, Tennessee, North Carolina, and Virginia secede? If they do go, would other slave states like Missouri and Kentucky go with them, given the absence of federal opposition? And finally, would West Virginia break away and stick with the Union as in OTL?