Simplify the following text for a Grade 16 native English-speaking person.
Original: Qasim Razvi was the leader of a local militia , the Razakars of Hyderabad State , who blocked accession into the Dominion of India after the Partition of British Indian empire against the wishes of the local majority Hindu-population , and fought against the Indian forces during occupation .
Simplified: Qasim Razvi ( or Kasim Razvi ) , acting on behalf of the Nizam , was the leader of a local Moslem militia , the Razakars who blocked accession into post-partition India of the predominantly Hindu region of Hyderabad , and fought against the Indian forces during Operation Polo .