I believe it was the crusades, which was attacking for the land known as "Jesus's birthplace", need anything, tag me :)
He did support it since he was a student of war and politics. He didn't have muhc to say on peace and peacemaking.
The decision in Dred Scott v. Sandford i believe.
Sumerian is the earliest known civilization and they used tigris and Euphrates so C
It was a transfer of power with no bloodshed .( This was when William and Mary took the throne )