How would you best describe the factors contributing to the development of the political and social system of feudalism?

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.

Sir thomas more, venerated in the catholic church as saint thomas more, was an english lawyer, social philosopher, author, statesman, and noted renaissance humanist. he was also a councillor to henry viii, and lord high chancellor of england from october 1529 to 16 may 1532. i found this information on wikipedia