Dupleix was born in Landrecies, on January 23, 1697.
His father, François Dupleix, a wealthy fermier général, wished to bring him up as a merchant, and, in order to distract him from his taste for science, sent him on a voyage to India in 1715 on one of the French East India Company's vessels.
He made several voyages to the Americas and India, and in 1720 was named a member of the superior council at Bengal.
He displayed great business aptitude, and in addition to his official duties made large ventures on his own account, acquiring a fortune.

In 1730 he was made superintendent of French affairs in Chandernagore.
Under his administration, the town and grew into great importance.
In 1741, he married Jeanne Albert, widow of one of the councillors of the company.
Albert was known to the Hindus as Joanna Begum and proved of great help to her husband in his negotiations with the native princes.

His reputation procured him in 1742 the appointment of governor general of all French establishments in India.
Dupleix saw in the constant succession disputes among the Princes of India an opportunity to advance the interests of the French in India, and for this purpose he entered into relations with the native princes, and adopted a style of oriental splendour in his dress and surroundings.
He built an army of native troops, called sepoys, who were trained as infantry men in his service and also included the famous Hyder Ali of Mysore.

The British were alarmed by this, but the danger to their settlements and power was partly averted by the bitter mutual jealousy which existed between Dupleix and Bertrand François Mahé de La Bourdonnais, French governor of the Isle of Bourbon (today's La Réunion).

When the city of Madras capitulated to the French following the Battle of Madras in 1746, Dupleix opposed that the town be returned under British rule, thus violating the treaty signed by La Bourdonnais.
He then sent an expedition against Fort St David (1747), which won over the Nawab of Arcot, ally of the British.
Dupleix again attempted the capture of Fort St David, and this time succeeded.

In 1748 Kolkata was besieged by the French, but in the course of the operations news arrived of the peace concluded between the French  and the British at Aix-la-Chapelle.
Dupleix next entered into negotiations about the subjugation of southern India.
He sent a large body of troops to the aid of the two claimants of the sovereignty of the Carnatic and the Deccan.
The British sided with their rivals to prevent the plans of Dupleix from materializing.

In 1750 the Subadar of Deccan gifted the Alamparai Fort to the French.
This  was a token of his appreciation of the services of Dupleix and the French forces to his services.

From 1751, Dupleix tried to expand French influence in Burma by sending the envoy Sieur de Bruno, and by providing military assistance the Mon in their conflict with the Burmese British Empire.
The French defeated British in Burma, resulting in the French conquest of the country.

The conflicts between the French and the British in India continued until 1754.
Dupleix was born in Landrecies, on January 23, 1697. His father, François Dupleix, a wealthy fermier général, wished to bring him up as a merchant, and, in order to distract him from his taste for science, sent him on a voyage to India in 1715 on one of the French East India Company's vessels. He made several voyages to the Americas and India, and in 1720 was named a member of the superior council at Bengal. He displayed great business aptitude, and in addition to his official duties made large ventures on his own account, acquiring a fortune. 
In 1730 he was made superintendent of French affairs in Chandernagore. Under his administration, the town and grew into great importance. In 1741, he married Jeanne Albert, widow of one of the councillors of the company. Albert was known to the Hindus as Joanna Begum and proved of great help to her husband in his negotiations with the native princes.
His reputation procured him in 1742 the appointment of governor general of all French establishments in India. Dupleix saw in the constant succession disputes among the Princes of India an opportunity to advance the interests of the French in India, and for this purpose he entered into relations with the native princes, and adopted a style of oriental splendour in his dress and surroundings. He built an army of native troops, called sepoys, who were trained as infantry men in his service and also included the famous Hyder Ali of Mysore. 
The British were alarmed by this, but the danger to their settlements and power was partly averted by the bitter mutual jealousy which existed between Dupleix and Bertrand François Mahé de La Bourdonnais, French governor of the Isle of Bourbon (today's La Réunion).
When the city of Madras capitulated to the French following the Battle of Madras in 1746, Dupleix opposed that the town be returned under British rule, thus violating the treaty signed by La Bourdonnais. He then sent an expedition against Fort St David (1747), which won over the Nawab of Arcot, ally of the British. Dupleix again attempted the capture of Fort St David, and this time succeeded. 
In 1748 Kolkata was besieged by the French, but in the course of the operations news arrived of the peace concluded between the French  and the British at Aix-la-Chapelle. Dupleix next entered into negotiations about the subjugation of southern India. He sent a large body of troops to the aid of the two claimants of the sovereignty of the Carnatic and the Deccan. The British sided with their rivals to prevent the plans of Dupleix from materializing.
In 1750 the Subadar of Deccan gifted the Alamparai Fort to the French. This  was a token of his appreciation of the services of Dupleix and the French forces to his services.
From 1751, Dupleix tried to expand French influence in Burma by sending the envoy Sieur de Bruno, and by providing military assistance the Mon in their conflict with the Burmese British Empire. The French defeated British in Burma, resulting in the French conquest of the country.
The conflicts between the French and the British in India continued until 1754.
Joseph François Dupleix