Who was responsible for the spread of the muslim realms to egypt and persia?

The correct answer is Umar.
Umar (also known as Omar), was one of the most important caliphs in history. A caliph is the main Muslim civil and religious ruler, thought to descend from Muhammad himself. During his reign, the Muslim realms spread throughout the world, including Egypt, Persia, and much of the Byzantine Empire.

Both countries had to aprove annexation.