The cheap labor in the form of slaves.
Answer:
Montesquieu
Baron de Montesquieu came up with separation of powers, which divides government powers between the 3 branches, so one doesn’t overpower another.
Christian belief is shared by Jews
I would also go with D.) Mutually assured destruction.
This whole idea mainly started during the Cold War. The United States and Soviet Union didn't want to use their nuclear weapons because they feared that if they did, the other side would retaliate. Ultimately, both sides would lose everything.