The Arabian Peninsula is the most driest desert on Earth. In that place it hardly rains. 3 to 5 inches a year it rains. The crossroad were important because the connected routes connect to from Asia, Africa, and Europe.
The Qur’an and Hadith
There in that place the main belief is that Muhammad gained a reputation for intelligence, honesty, and kindness. The followers of Muhammad moved to Mecca to Medina because the were given leadership to Medina.
The Qur'an and the Sunna are related because basis of Islamic law. The similarity among Judaism, Christianity and Islam are that they both think that god created everything.
God created many groups of people. The reason why God created people so he can challenge them in life. People must do good things for other for their day of Judgement.
Muhammad's father-in-law promised him to follow his example before he died. His strong leadership kept all of Arabia united under Islam.
The Muslims faced two great superpowers in the region. And the Muslim empire had developed a skilled, disciplined, and enthusiastic army