After the november election of lincoln in 1860, some southern states seceded from the union in december and january. others waited till may of 1861. the historical context which explains why states seceded later is the fact that citizens of these states:

The answer is:

still attached to the Union from habit and national traditions, and averse to change

Explanation:

The Civil War embittered over Lincoln's election and perceived northern threats to the slave system.

what the question i might be able to

it proved indian land claims were unjustified.