Original sentence: Caracol was at first a client of Mutal (at the Tikal site) 70 km to the northwest.The town grew into one of the largest ancient Maya cities, covering some 65 square miles (168 km²) with an estimated peak population of about 120,000, or possibly as many as 180,000 people
Edited sentence: Caracol was at first a client of Mutal (at the Tikal site) 70 km to the northwest.The town grew into one of the largest ancient Maya cities, covering some 65 square miles (168 km²) with an estimated peak population of about 120,000, or possibly as many as 180,000 people