With which misal was Maharaja Ranjit Singh related?

Ranjit Singh was the son of Mahan Singh, the leader of the __________ misl.

Ranjit Singh was a leader of the -

Which of these is related with western ghats?

Who is related with suppression of thuggee?

In treaty of Amritsar, which river was made boundary of Ranjeet Singh dominion and of Company's?