In order to construct the pyramids, the egyptians needed to be proficient in engineering and a.) astronomy b.) mathematics c.) chemistry d.) anatomy

B.) mathematics is your answer

Not (A), because the study of stars and space have nothing to do with building buildings (or pyramids in this case)

Not (C), for while the pyramids doubled as a "battery" that was able to absorb and reflect the lights, they didn't really have anything to do with chemistry.

Not (D), building large brick pyramids have nothing to do with the study of the human body.

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a system of cooperative federalism emerged, as the powers of the federal government expanded.

japan is located on a chain of islands called an archipelago. it is made up of four main islands and thousands of smaller ones. the terrain is mountainous, which means there is not a lot of good land for farming. because of the geography, the japanese relied on the sea for many aspects of daily life.