Simplify the following text for a Grade 7 native English-speaking person.
Original: The Meccan suras are the chronologically earlier suras of the Qur ` an that were revealed at Makkah .
Simplified: The Meccan suras are the suras that Muslims believe were shown to Muhammad when he was in Mecca . They are usually shorter than the Medinan suras and are usually placed after them in the Qur ` an .