Out of mecca, east to India, west across north Afica, and on into Spain.
The Muslim Empire spread into Islam to other people. It went into the Military conquest that took about 100 years to expand most of their empire. They were great fighters, if they died in battle, they believed they would go right to heaven. If they conquered people they would treat them fairly. They aslo speaded the Muslim Empire by trade. They also had the Battle of Tours. It was in southern France and the French Christians, under Charles Martel, defeated the Muslims and stopped their advance into Europe.
Contributions to our society:
Mathematics- Sprend Gupta math ideas and created Algebra and trigonomety
Medicine- They created hospitals. They also wrote medical textbooks and they made it so docters were required to pass exams to practice medicine.
Architecture- It was influenced by the Byzantine and Indian styles.
Astronomy- It was learned from the Greek ideas and they studied the stars. That is how they created astronomical tables.
Islamic Law- It was based on Islamic religious laws in the Qur'an. This became the basis for political laws in the empire.
Banking- They began to use money and they allowed credit to be used.