Simplify the following text for a Grade 7 native English-speaking person.
Original: Maharashtra has many forts like Raigad and Pratapgad which were very important in the early history of the Maratha empire and also sea forts like the one at Sindhudurg .
Simplified: Forts have played an important role in the history of Maharashtra since the time of the Peshwas . Some of the important forts in Maharashtra are Raigad , Vijaydurg , Pratapgad , Sinhagad .