Simplify the following text for a Grade 13 native English-speaking person.
Original: Razvi was politically powerful and a close advisor of the Nizam , whom he encouraged to defy the infidel government , and blocked the invasion of Hyderabad into Republic of India .
Simplified: Razvi was politically powerful and a close advisor of the Nizam , whom he encouraged to defy the Indian government , and block the accession of Hyderabad into India .