What is a common subject of Mexican murals?

The murals were usually painted with themes glorifying the Mexican Revolution, recalling Mexico's early pre-Hispanic heritage and promoting the ideals of the new government.

Explanation:

In order to create these murals, the government employed some of the best Mexican artists of the day.

uhh idk for sure but i think it makes it difficult to pump the oil through the oil rigs

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.