I would say the answer is B. A is wrong because slavery was just being called for abolition. D is wrong because no women had the right to vote till 1890s.
D) To fight the spread of communism.
Because of the Domino Theory they thought that if Vietnam fell into Communism, the whole region would follow. So therefore they wanted to support South Vietnam in order to contain Communism in Asia.
Answer: The reason it wasn't cold because it was an expression of the cold war, and plus it was mainly because so many people was dying and the war lasted a long time.
Explanation:
Vladimir Lenin was famous he was a dictator in another country if that helps.
Answer:
1. The ruler will not keep an army of his own.
2. British troops would be stationed permanently in the Indian ruler's territory.
3. The ruler would have to pay for the maintenance of these troops. The payment could be made in cash or kind, or by ceding a part of the ruler's territory.
4. It was compulsory for the Indian ruler to house a British resident in his court.
5. The ruler could not employ any non-British Europeans in his service or dismiss those who were there.
6. The ruler had to acknowledge the dominion of the British.