The correct answer is: Revenue collection system.
A zamindari was a type of revenue collection system in India under which a large landholder, known as a zamindar, was responsible for collecting taxes from the peasants who lived on his land and then paying a fixed sum to the government. The zamindari system was introduced by the Mughals in the 16th century and continued under British rule until it was abolished in 1950.
A princely state was an independent state ruled by a prince or princess. Princely states were common in India before and during British rule. After India gained independence in 1947, the princely states were merged into the Indian Union.
A fort is a fortified building or structure. Forts are often used for military purposes, but they can also be used for other purposes, such as housing or trade. Forts have been built throughout history in many different parts of the world.
A temple complex is a group of temples that are built together. Temple complexes are often found in religious areas, such as pilgrimage sites. Temple complexes can be very large and complex, and they can contain many different types of temples.