Because the Islamic people saw it more than just a religion but an actual way of life in which to follow everyday
Answer: can you show me a picture of the choices
The factors which lead to the rise of feudalism was the fact that people couldn't protect themselves and needed land where they could be safe considering the fact that a single peasant didn't have enough capabilities to defend himself. This lead to the fact that these peasants had to give food and goods to their lord with his army.