Answer:Realistic conflict theory of prejudice
Explanation:
Realistic conflict theory arises from scarcity of resources and explains that whenever groups especially of equal status compete over limited resources, there are bound to arise inter group conflict.This means that people will tend to be prejudiced and discriminate against other competing outgroups when resources are limited or scarce and can even cause a feud to develop. This can be seen in the anti Chinese prejudice in the United States after the transcontinental railroad was completed and other related examples from the question.
