Explanation:
Plato and Aristotle are the two most important Greek philosophers. Their work has been the main focus of interest for students of philosophy and specialists.
Hajj unites Muslims because it brings them together to perform an act of worship towards God (Allah). They all perform Hajj to obey Allah and seek forgiveness. Hajj is also performed at a specific time (i.e in the lunar month of Thul-Hijjah) so a lot of Muslims congregate to do this mandatory act of worship.
