<em>Overexpectation effect: </em><em>In psychology, the term "overexpectation effect" is defined as the phenomenon that tends to occur when a researcher finds the declination of response to a very well established CS or conditioned stimulus that have been encountered with further reinforcement training with respect to each other. The overexpectation effect has been widely studied by a psychologist named Ivan Pavlov who is responsible for setting up the pattern for studying and then explaining the response loss.</em>
<em>In reference to the question, the given statement represents the overexpectation effect.</em>
Answer: Gold rush and mining opportunities as well as the Westward Expansion. The opportunity to work in the cattle industry; to be a “cowboy” Faster travel to the West by railroad; availability of supplies due to the railroad. The opportunity to own land cheaply under the Homestead Act.