This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
1. British wanted to control the rich province of Bengal .
2. alwardi khan , the nawab of Bengal , was an able administrator . he had followed a policy of keeping the British merchant under control . but after his death , his grand son , siraj-ud-dualah became the nawab .
3. the British started extending the fortification of Calcutta .
4. siraj-ud-dualah's troops took over Calcutta .
5. Robert Clive set out from madras with an army of 900 Europeans and 1200 sepoys, armed, trained in the European style of warfare and recaptured Calcutta .
6. the British consolidated their position in Bengal by making Mir jafar , a commander of Bengal army, as the nawab of Bengal
7. Mir jafar couldn't fulfill the constant demands of the British.
8.they installed his son in law , Mir qasim as the nawab. he granted equal trade facilities to the British and Indian merchants.
9. this annoyed the British and they attacked him.
10.Mir qasim took refuge at awadh with shiya-ud-dualah where mughal emperor, shah Alam , was also taking refuge .
Robert  Clive joined forces with Mir Jafar,the commander in chief of the nawab's exchange for his help in defeating Sirajuddaulah,Mir Jafar was promised to be made the nawab of Bengal.

The armies of the English and the nawab met at Plassey in 1757.

Sirajuddaulah,finding that Mir Jafar had turned traitor and was taking no action in the battle ,fled the field.But he was caught ans executed.

This battle marked the ascendancy of the English in Bengal.