Why was the year 1757 an important year for the English East India Company in India?

In 1757 the English East India Company got control over Madras by defeating Nawab Siraj-ud-daulah in the Battle of Plassey.

In 1757 the English East India Company got control over Oudh by defeating Nawab Siraj-ud-daulah in the Battle of Berar.

In 1757 the English East India Company got control over Bengal by defeating Nawab Siraj-ud-daulah in the Battle of Plassey.

In 1757 the English East India Company got control over Hyderabad by defeating the Nizam in the Battle of Plassey