Which letter indicates the extent of islam’s spread 100 years after muhammed‘s death?

I believe it's Egypt and Persia
The conquest of the Egyptian Regions into Muslim was being done by the  Persian Empire Which was led by King Khorsau II
Before the conquest, this region belonged to the Byzantine empire who held Catholic as its main religions

You didn't include the map, so I can't be entirely sure, but if it's the same test that I have, it's B.

Of the revolutions of 1848.