Did secession, in your opinion, have little to do with a rational assessment of alternatives?

Explanation:

Remember you are asking for an opinion. Since the constitution was signed, there had been constant debate about the way the south made its living. Rutledge (South Carolina), though I cannot find a reference for this, would not sign the constitution unless the question of slavery was not made an issue.

From then until the civil war began in 1861, many compromises were tried and most failed. Kansas was a particularly bad scene.

I think the south saw its way of life completely threatened by people who could not work out reasonable alternatives. So my opinion is that the statement you make does not reflect everything that was tried.

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.