Sachin was a:

Sachin was a princely state.

A princely state was a state in India that was ruled by a prince or a hereditary ruler. The princely states were not part of British India, but they were under British suzerainty. This meant that the British government had control over the foreign affairs and defense of the princely states, but the rulers of the princely states had control over their internal affairs.

The princely states were abolished in 1947, when India gained independence from British rule. The princely states were then merged into the Indian Union or Pakistan.

Here is a brief explanation of each option:

• Zamindari: A zamindari was a system of land tenure in India in which the land was owned by a zamindar, or landlord, and was leased to peasants. The zamindars were responsible for collecting taxes from the peasants and for maintaining law and order in their areas.
• British cantonment: A British cantonment was a military base in India that was established by the British East India Company. The cantonments were usually located in strategic locations, such as near important trade routes or on the borders of enemy territory.
• Portuguese colony: A Portuguese colony was a territory that was under the control of Portugal. Portugal had colonies in Africa, Asia, and South America. The Portuguese colonies were usually located in areas that were rich in natural resources, such as gold, diamonds, and spices.