They all believe in one God, their holy book derives from the Torah somewhat, they generally have the same ethics (don’t kill, don’t steal etc.)
However, Jews are still waiting for a messiah, Christians are waiting for the Messiah Jesus to come again, and Muslims are a bit of a mix, Messianism is alien to Sunni Islam but it is a central belief in Shia Islam.
The reason as to why the ethnologist focus more on non-literate
people on their study because mainly of the reason that they are going extinct.
The non-literate people are being referred to those societies in which their
people does not have the ability of being able to read and write in which the ethnologist
studies and help out of.
Nobles were lofty, financially well-to-do citizens who carried much power within the community.