Introduce your answer with nature of foreign rule in India.
Body- Write about how several foreigners who were aware about the real nature of British rule and moved my the suffering of Indian masses joined Indian struggle for freedom and contributed to it in various capacity.
Conclude with writeup that depict long lasting effect left by their contribution that felt even after Independence.
( Note- This is a PYQ was asked by UPSC in 2013 CSE Mains. As per our analysis there is a high chance of coming a question on similar lines in upcoming exams )