Blah, blah, blah. Having chosen to start the war the South alone is responsible for all the death and destruction and misery that it brought to them.
Blah, blah, blah, having continuously repeated the fake assertion that the South started the war, you simply go onward from that false premise.
Lincoln sent warships. Warships started the war.
What the South did was threaten the money streams of the Rich, Powerful, Arrogant ruling class that controlled Washington DC, (and that same arrogant elite control it today) and they launched a war against the South to protect their finances.
And don't forget, they offered the South permanent slavery before they launched their war to protect their own money streams.