sloughfoot
Grandmaster
It had to be by force. There was no legal process of secession. There is one for marriage, it's called divorce. By "separating" and having an armed rebellion against your own country, you are effectively turning your back on the constitution that YOU ratified and swore to uphold. When the confederates shot first, we had every right to put down the unlawful rebellion. They technically never left the union IMO, so that was always our soil to take back from the traitors.
An armed rebellion against your own country? It seems you disregard loyalty to your state. My loyalty to this day lies with my state. Not to that federal government created by the States.
The south sought to remove itself from under purview of that Federal government. It did not seek to overthrow or usurp that federal government. A true rebellion would have been for the southern states to march on Washington DC and overthrow that federal government. This never happened.
The states simply withdrew their consent to be ruled by the Federal government. They did not try to overthrow that government. This is where your arguments fall short.