The National Research Act of 1974 Identified the basic ethical principles of human subjects research. Established the National Commission. Identified guidelines to ensure the ethical conduct of research. Required that all federal agencies have the same regulations governing human subjects research.

The correct option is B

Explanation:

The correct option is establishment of the National Commission so that the IRBs are created at the institutional level.

Option A is not correct as that is indicated in the previous Act.

Option C is not correct as the guidelines are formulated by the National Commission in 1979.

Option D is not correct as this is incorporated in the later Act.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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both eastern and western early north american cultures were known for building wigwams and longhouses.

wigwams, also called wetus, were small houses of 8-10 feet tall, made of wooden frames covered with woven mats and sheets that were used by algonquian indians. similarly,   longhouses were also used by algonquian and the iroquois tribes, and they were built as well with pole frames and elm bark covering. however, the main difference between wigwams and longhouses is that the latter was much larger than the former, with 200 feet long, 20 feet wide, and 20 feet high with inner raised platforms used for sleeping space.