The correct answer is D. His policy towards the Gorkhas community.
Sansar Chand was the ruler of Kangra state from 1775 to 1823. He was a powerful and ambitious ruler who tried to expand his kingdom by conquering neighboring states. He also tried to suppress the Gorkhas, who were a growing power in the region. This led to a conflict between Sansar Chand and the Gorkhas, which eventually resulted in the Gorkhas invading Kangra state.
Sansar Chand’s policy towards the Gorkhas was one of hostility and suspicion. He saw them as a threat to his power and authority, and he tried to prevent them from expanding their influence in the region. This led to a series of conflicts between Sansar Chand and the Gorkhas, which eventually resulted in the Gorkhas invading Kangra state.
The other options are incorrect because they do not explain why the hill chiefs invited the Gorkhas to invade Kangra. Option A is incorrect because the merger of many small states into Kangra state did not promote the hill chiefs to invite Gorkhas to invade Kangra. Option B is incorrect because Sansar Chand’s intervention into Nepal’s administration did not promote the hill chiefs to invite Gorkhas to invade Kangra. Option C is incorrect because Sansar Chand did not help Maharaja Ranjit Singh to over rule the Nepal Government.