When did it first develop for Islam?

Islam first developed in the early 7th century CE, with the Prophet Muhammad receiving his first revelations in 610 CE in the Arabian Peninsula. The religion began to spread following his teachings, particularly after the migration (Hijra) to Medina in 622 CE, where a Muslim community was established. By the time of Muhammad's death in 632 CE, Islam had firmly taken root in the region, leading to further expansion throughout the Arabian Peninsula and beyond.