C) Slaves
Slavery grew due to the rise in demand of cotton.
The correct answer is The creation Story.
The events are in this order as occured in the world history;
1) Sepoy Rebellion (This is also known as Indian Mutiny, the Great Rebellion, the Revolt of 1857 etc. and was the first major uprising against East India Company and reportedly set path for the establishment of British Raj in India)
2) British Raj established. (1858)
3) World War 1 (1914)
4) Amritsar Massacre (1919) (This is also known in Indian History as The Jallianwala Bagh massacre)
The answer to the question is b
Propaganda, they inspired more people to join the fight on America's side.