Since the constitution guarantees the states a republican government a state would not be ejected but its government changed to a republican one.
Actually the true essence of the Civil War was the establishment of true republican governments where there was a Slaveocracy, a tyranny established without the consent of 80-90% of the population. When the North forced the South to allow Blacks to vote it had to change the rules of sufferage in the North as well. Ironically, the war forced both sections against their wills and intentions to make the electorate more representative.
Now that is an interesting point, IMHO.
That is very plain English, son. It says plainly that powers not delegated to the federal government nor prohibited to the states are all reserved state powers. That clearly means everything not specifically delegated. Your version is that everything is a federal power unless specifically reserved to the states.
Given the level of your ability to understand the language used in an agreement, any contracting I do with you will require total payment in advance.