Place the events in order from earliest to latest.
A Battle of Fort Sumter, battle of Gettysburg, General Lee surrenders, Florida secedes
B Florida secedes, battle of Fort Sumter, battle of Gettysburg, General Lee surrenders
C Battle of Fort Sumter, Florida secedes, battle of Gettysburg, General Lee surrenders
D Battle of Fort Sumter, Battle of Gettysburg, Florida secedes, General Lee surrenders