The Dual Government in Bengal was a unique political system that existed during the British rule in India. The system was in place from 1765 to 1772, during which time the Governor of Bengal was assisted by a council of Indian officials known as the Nawab's Council. The Governor had executive powers, while the Nawab's Council had judicial powers.

Governors during the Dual Government in Bengal:
The Dual Government in Bengal last functioned when the Governor was Cartier. Before Cartier, there were three other Governors who were part of the Dual Government in Bengal:

- Robert Clive: He was the first British Governor of Bengal and served from 1765 to 1767. He established the Dual Government in Bengal by creating the Nawab's Council to assist him in the administration of the province.
- Harry Verelst: He served as the Governor of Bengal from 1767 to 1769. He continued the policy of the Dual Government and made some administrative reforms.
- John Cartier: He was the last Governor of Bengal to function under the Dual Government system. He served from 1769 to 1772 and was responsible for the abolition of the Dual Government system.

Role of the Nawab's Council:
The Nawab's Council was a group of Indian officials who advised the Governor on matters of administration. The Council had judicial powers and was responsible for the administration of justice in the province. The Council was headed by the Naib Nazim, who was the chief administrator of the Council.

Reasons for the Dual Government:
The Dual Government was established in Bengal due to several reasons:

- The British did not have enough personnel to administer the province.
- The British were not familiar with the local customs and traditions of the province.
- The British wanted to establish a system of collaboration with the local Indian officials.

Conclusion:
In conclusion, the Dual Government in Bengal was a unique political system that existed during the British rule in India. It was established to address the administrative challenges faced by the British in Bengal. The system was in place from 1765 to 1772, during which time the Governor was assisted by a council of Indian officials known as the Nawab's Council. The last Governor to function under the Dual Government system was John Cartier.