What event showed the power and speed of locomotives? *

A race against a  horse drawn railcar in 1830

Explanation:

"When his overseer suggested that there was plenty of iron ore on the land, Cooper decided to set up an iron business. Here he invented a process for rolling steel and used it to make rails for horse driven trolleys. This later led to one of his most significant inventions, that is, the first steam powered locomotive."

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.