How did creating a civilization in the fertile crescent help the Sumerians emerge?

Which of the following studies is linked most directly to the establishment of the national research act in 1974 and ultimately to the belmont report and federal regulations for human subject protection? a. the public health service tuskegee study of untreated syphilis in the negro male.b. stanford prison experiment (zimbardo).c. tearoom trade study (humphreys).d. the harvard t3 study.

The health care system in is referred to as a singleminus−payer health care system, and is a system in which the government provides national health insurance to all residents.

An unsuccessful attempt at cooperation among the colonies was