I'm fairly certian that it is B) The Balkan Peninsula.
Some successfully resisted removal by fighting U.S troops and winning. If you think i'm wrong google it.
No, he did not die from a gas bomb. He did go through a gas bomb when he fought in WWI but survived it.
He killed himself to prevent being caught when everyone was hunting him down after the WWII ended
1:Calvin Coolidge
2:Warren Harding
3:Herbert Hoover