Hello :)
African Americans influence on modern dance really was largely significant and is greatly broad-brushed by society. See, it first originated in the 20th century when a group of choreographers and dancers battled against two different styles of dance- ballet and vaudeville, (which was just a mixture of different forms of dance, like modern). African American artists wanted to be taken as more then just entertainment and started trail blazing the dance world, wanting to be taken more seriously. Some pioneers from this time-period would be people like Louise Fuller, or Isadora Duncan.
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Answer: treble, alto, bass
Here's my attempt, also sorry for the really bad quality of the picture
Answer: The linguistic relativity theory
Explanation:
The linguistic relativity theory states that how a language is structured will have impact on the way its speakers views the world. This theory explains that the perceptions people have is deeply rooted in the language they speak, it was first introduced by Edward Sapir which was later worked on by Benjamin Lee Worf who happens to be his student, lead to the name "The Sapir Whorf Hypothesis.