The characteristic of Congress best fits in the blank above would be "Bicameral Legislature" This was to accommodate for the smaller states having less representation.
I believe the answer is: <span>Chicago School of Sociology
According to </span><span>Chicago School of Sociology, urban environment is created by a lot of groups of people which come in together from various backgrounds.
To get along in such culture, it is necessary for people to stop forcing each other to conform to their personal culture and start to develop a sense of tolerance.</span>
Around what years? if it is around the late 1800's, then it was the farmers' allience