I need help, with my us history homework

Which of the following best completes the diagram above? a. land ordinance b. northwest ordinance c. revolutionary war d. shays' rebellion

Reasons for factor mobility of a combine harvester, cotton, an oil platforn and a woodland

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.