the National Science Foundation
The website publisher that would be considered an authoritative source about the cultures of ancient Mesopotamia is the National Science Foundation because it uses a scientific apporach with peer reviewed articles that assure that the sources used are legitimate and trustworthy, while the other sites could not assure this principle.
Fact Monster
the least biased websites is fact monster, because it does not have to respond to any party or association that coud dictate its opinion in one way or the other, while the other sites in the list could propose thesis influenced either by their political views or by their economic interests in the subject discussed.
