they believed in the existence of the gods
The sumerians believed that everything was alive, the moon, lighning, thunder, the sun!
With other Sumerians
The Sumerians gave us food and writing.
Sumerians did not have any advance over the economy relative to their place and time. They were there to do their mission.
The Sumerians did at one point invent medicine, but it was invented even earlier by the people of Grease and Egypt.
The Sumerians invented glass accidentally.
polytheism and monotheism
they mummified the dead for the afterlife
No. Abraham lived among them, but was not related to them. His family originated further north and was Semitic. Also, Abraham's beliefs were the polar opposite of those of the Sumerians. See also:More about Abraham
No. Probably a Fascists if you hold to his Political beliefs. If you hold to his beliefs about a supreme race then you are probably a skin head.
Beliefs are what people hold as personal truths. It does not necessarily have to be proven for someone to hold it as a belief. Some people's beliefs change throughout their life depending on their experiences.
Intensity
the beliefs of a samuria was that they believed there sword hold there soul
It is not a requirement that a Quaker hold or not hold any particular belief.
Free exercise clause
You will hold steadfast to your beliefs and will be very tough to dissuade of those beliefs.
the right to hold fundamentaslist beliefs
Can you please provide more information about Theodore, as there are many individuals with that name and various beliefs they may hold?