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The important Islamic event that happened in year 622 AD is the Immigration (Hijra) of Prophet Muhammad (peace be upon him) from Makkah (Mecca) to Medina (both cities are currently in the country of Saudi Arabia). This immigration occurred as command from God when the unbelievers plotted to assassinate the prophet. This event marked the starting of the Islamic calendar that is called Hijra Islamic calendar.

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15y ago

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