Answer:
1. Property owners and businesspeople as a class, as contrasted with the working class or proletariat.
bourgeoisie
2. The religion founded by Mohammed. In its essence Islam holds to the doctrine of the unity and omnipotence of Allah, and of the responsibility of every human being to Allah.
Islam
3. Belonging to or having to do with the Middle Ages (the years from about A.D. 500 to 1450).
medieval
4. The period in European history between ancient and modern times, from about A.D. 500 to 1450.
Middle Ages
5. To reproduce, to increase in number or intensity.
propagated
6. Muslim Turks who conquered the Arabs in the A.D. 1000s leading to the Crusades.
Saracens
Explanation: Order from 1-6
bourgeoisie
Islam
medieval
Middle Ages
propagated
Saracens