Why did southern slave owners resist any challenge to the institution of slavery?

Which scenario best illustrates the principle of popular sovereignty?

No mercy for the user europa2433 because he or she reports everyone. and its annoying. come on who agrees.

The united states' entry into world war ii had which of these effects on domestic politics? pro-union legislation was repealed. support for banking reform intensified. concerns about the economy were largely abandoned. attempts to promote civil rights became far more successful.