The lord would provide to the vassal land from which they could make money from and in return the vassal would contribute troops to the lords army. Sometimes vassals would also pay a small fee of grain or various other goods as a sort of tax for the land.
The founder of Christianity is usually considered to be Jesus of Nazareth.
Hope this helps,
Davinia.
Practical escalators use electric fields to speed up and increase the energy of a beam of particles, which are steered unfocused by magnetic fields.
