Simplify the following text for a Grade 7 native English-speaking person.
Original: In 17th century Kolkata was under direct rule of the Nawab of Bengal Siraj-Ud-Daulah , comprised three villages Kalikata , Gobindapur and Sutanuti .
Simplified: At that time Kolkata , ruled by the Nawab of Bengal Siraj-Ud-Daulah , had three villages . They were Kalikata , Govindapur and Sutanuti .