Original sentence: Many historians believe that the Brahmi script and the subsequent Indic alphabets are derived from this script as well, which would make it, and ultimately Egyptian, the ancestor of most writing systems in use today
Edited sentence: ) that the Brahmi script and the subsequent Indic alphabets are derived from this script as well, which would make it, and ultimately Egyptian, the ancestor of most writing systems in use today.Many historians [who.] believe (source