The decrease in India’s GDP during British rule can be attributed to a number of factors. The British implemented exploitative economic policies that prioritized their own interests over those of the Indian population. They heavily taxed Indian industries and agriculture, hindering their growth and development.

Additionally, the British extracted resources from India and sent them back to Britain, further depleting the wealth of the country. The British also suppressed indigenous industries in order to promote British manufactured goods, which had a detrimental impact on the Indian economy.

Furthermore, the British systematically oppressed the Indian population, leading to widespread poverty, famine, and overall economic instability. This, combined with the draining of resources and wealth from the country, contributed to the significant decrease in India’s GDP during British rule.