Sir Thomas Roe was sent to India to the court of Mughal Emperor Jahangir in 1612 to get concessions to trade with India. He was sent by King James I. Sir Thomas's mission was highly successful and the English East India Company succeeded in getting rights to reside and establish factories in Surat and other parts of the country.

One of the causes of English success was their naval supremacy. on account of this, the English could send help to India whenever it was required. There was none to check them on the way, It was this factor that cut off the link between the French, possession in India and France.

Britain was commercially superior and the Brtish in India were supported by the Home Government. There was full cooperation among the British officers. The British could concentrate on wars as there was peace in England while the French were too busy fighting wars in Europe. 

Dupleix, the French governor wanted to maintain French supremacy in the Deccan through his shrewd diplomacy. But he was matched with the equally determined young officer called Robert Clive of the English army. Dupleix, capable he was, proved no match for Robert Clive. 

In 1742, Dupleix was appointed governor general of the company with authority over French investments in India.  He sent an expedition against Fort St. David in 1747, but it was defeated by the Nawab of Arcot, who was allied with the British. In the end, Dupleix was unable to match the British aspirations and activities directed by Robert Clive, and French influence declined as British power increased.

Britain was commercially superior and the Brtish in India were supported by the Home Government. There was full cooperation among the British officers. The mistakes committed by Count- de- Lally enabled the British to capture Madras. The British could concentrate on wars as there was peace in England while the French were too busy fighting wars in Europe. 

The British army and generals were much better coordinated than the French. The French generals were rude and haughty and therefore unpopular. The French generals failed to inculcate team spirit or to strike a coordination between the army and the navy.

The main reason for British success was the Naval supremacy. The British navy was far superior to its French counterpart. The British received a steady supply of arms and resources directly from their naval base in Bombay. The French were always at a disadvantage due to the fact that their base was in Mauritius which led to a considerable delay for the French.