This system would be called the "totalitarian system".
Off the top of my head:
The US devised the Manhattan project during ww2 and afterwards to develop nuclear weapons. The kept this secret from USSR even though they were allied. This contributed to Stalin’s paranoia and increased tensions between the two countries.
You also mention how Truman used this ‘atomic-monopoly’ to give him confidence and make him think that he could dictate decisions during the Potsdam conference and other meetings which heightened tensions with USSR.
Nuclear weapons also played a large role during the Cuban Missile Crisis, the point where nuclear war was at it’s closest to becoming reality and destroying the world.
By that point the USSR had also developed atomic bombs. The fact both superpowers had nuclear weapons meant they had to be sensitive in the way they handled each other and you could link this with Cuba and argue that it was the only reason the Cold War didn’t turn into full-scale, physical war.
There’s other things you could say beyond these points as well.
The answer is D. India developed and maintained a securely centralized and powerful empire that lasted for centuries.
Gandhi was unhappy because when the British granted India her independence, the Indian Independence Act of 1947 partitioned British India into two: India and Pakistan. His vision of a free India was a harmonious co-existence of the Hindus and Muslims in one nation.
Belive It's D. sorry If Its Not. Good Luck :)
