During the 1930s, a massive dust cloud caused the mass migration from rural to urban areas within the United States. Which type of push factor caused this mass migration?

The Dust Bowl mainly affected farmers and their crops in the rural areas. After  the Dust Bowl happened, the land was no longer suitable for planting new crops, therefore the farmers who got paid for their crops migrated to urban areas in search for a new job.

answer: musical connotation

leonard b. meyer (1918-2007) was an american composer, author and philosopher. his work emotion and meaning in music is perhaps the first major treatise on music. it is a philosophical and psychological work, greatly influenced by koffka (one of the major proponents of gestalt psychology). his work deals with the problem of musical meaning and musical communication.