An ethnomusicologist is a scientist who studies

An ethnomusicologist is a scientist who studies music in its cultural and social dimensions.

Explanation:

Ethnomusicology is an academic area linked to anthropology and ethnology, that studies music as a cultural phenomenon. It focuses on people making music in different cultures and societies around the world and what it can tell about the different worldviews, concepts, and psychologies related to those cultures.

an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.

answer: alexander hamilton

explanation: alexander hamilton was george washington's right hand man. he took an early role in the militia as the american revolutionary war began. in 1777, he became a senior aide to general washington in running the new continental army.