- Causes for Plassey included the British misuse of trade privileges (farman), lack of respect for the Nawab's authority, and competition with the French. - The fortification of Calcutta without permission was a direct provocation that led Siraj-ud-Daulah to attack and capture Calcutta in 1756. - The recapture of Calcutta by Clive and the subsequent conspiracy and battle at Plassey followed this event.