know how controlled India from 1757 onwards.

Britain controlled India from 1757 onwards through a mix of military conquest, diplomacy, trade, and governance. The most significant event in this process was the Battle of Plassey in 1757, where the British East India Company defeated the Nawab of Bengal and gained control of Bengal.

After this, the British gradually extended their control over other parts of India, mainly through a combination of military force and alliances with local rulers. They also established a system of governance, which involved the appointment of British governors-general and the creation of administrative systems and laws that favored British interests.

The British also monopolized trade in India, which gave them immense wealth and influence. They imposed heavy taxes on Indian goods and facilitated the export of Indian raw materials to Britain, which were then processed and sold back to India at a higher price.

Finally, the British also exploited India's social and cultural divisions to maintain their control. They encouraged divisions between Hindus and Muslims, as well as between different castes and religious groups, to prevent any united opposition against their rule. This policy of "divide and rule" was an essential pillar of British control over India.

Overall, British control over India from 1757 onwards was a complex process that involved military, economic, and cultural strategies. It was not until India gained independence in 1947 that the country was free from British rule.