No idea I wish I could help you
His message in Mecca was not received well. He was being persecuted and mocked. He sought refuge in The Green Dome of Medina where he sought refuge and continued to spread the word of Islam becoming powerful and spreading Islam a d the word of Allah.
What period are you talking about?
Hey There!
Your answer is 400 years!
If you need anymore help feel free to ask me!
Hope this helps!