The Permanent Settlement of 1793 by the British had a major impact on:

The correct answer is: b) Zamindaris.

The Permanent Settlement of 1793 was a land revenue system introduced by the British East India Company in Bengal, Bihar, and Orissa. It fixed the revenue payable by zamindars (landowners) at a high level and made them responsible for collecting the revenue from the peasants. This system had a major impact on the zamindars, who were now under pressure to extract as much revenue as possible from the peasants. This led to widespread poverty and unrest in the region.

The other options are incorrect because:

• a) Princely states were not directly affected by the Permanent Settlement.
• c) Trade regulations were not significantly changed by the Permanent Settlement.
• d) Military recruitment was not a major concern of the British East India Company at the time of the Permanent Settlement.