Iowa: 3.1%. According to our research of Iowa and other state lists there were 2 registered sex offenders living in Aurora, Iowa as of September 06, 2015. The ratio of number of residents in Aurora to the number of sex offenders is 86 to 1.
William G. Sumner, who coined the term ethnocentrism, is famously known as America's first sociology professor. He taught social sciences at the Yale University. It is wondrous, really, how this world is made up of so many different people belonging to different races or ethnicities.
Although Gumplowicz's writings on ethnocentrism, being interspersed with other ideas, could be found in a number of his books and papers, future authors writing on ethnocentrism may want to state that the first printed use of the concept seems to be in Gumplowicz (1879) .t is, however, peculiar that Sumner's (1906) widely-cited section on ethnocentrism did not cite Gumplowicz. There are other authors, writing in English, who had also used the concept of ethnocentrism before Sumner, and who were probably also influenced by Gumplowicz.