How did imperialism contribute to the growth and globalization of the world economy? 

How did Britain secure its hold on India, and what colonial polices led to the beginning of Indian Nationalism?
Please answer all parts

How did Britain secure its hold on India, and what colonial polices led to the beginning of Indian Nationalism?
How did British policy in India change as a result of the Sepoy Rebellion?
How did imperialism contribute to the growth and globalization of the world economy?