In summary...
1. Assume the new designation "The Union Party", adopt Crittenden's measures, or the Peace Convention's, and no new cases of secession will occur, and an early return of many, if not all the states which had already broken off from the Union.
2. Collect the duties on foriegn goods outside the ports of which the Government has lost the command, or close such ports by act of Congress, and blockade them.
3. Conquer the seceded States by invading armies. It will take two or three years, with 300,000 troops, of which, more than a third will be lost, frightful destruction of life and property in the seceding States; enormous waste of human life to the North and Northwest, with at least $250,000,000 spent to whom?, Fifteen devastated provinces, held by generations by heavy garrisons, at an expense quadruple the net taxes which would be possible to extort from them, followed by a protector or emperor.
4. Say to the seceded States, "Wayward sisters, depart in peace".
Winfield Scott.
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[We know which of the four Lincoln chose and it wasn't peace]
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David Upton