Muhammad left Mecca to live in Medina because <span>he feared for his life. </span>The answer to your question is B. I hope that this is the answer that you were looking for and it has helped you.
Slavery started because people couldn't do their jobs themselves, so they had other people do it for them.
It seems that you have missed to indicate the necessary options for us to choose from so I had to look for it. Anyway, here is the answer. The one that represent an effect of the expansion of Islam into India is this: <span>The Mughal Empire replaced the Ottoman Empire as the most powerful empire in the region. Hope this helps.</span>