Since the united states became highly bureaucratized and industrialized many individuals in this society feel isolated. according to your text, this example best represents the theory.

Mass Society Theory.

A mass society is a society in which traditional social ties have been diminished due to prosperity and bureaucracy. According to the Mass Society Theory, the increase in size and modernity weakens the social fabric and individuals become more individualistic and socially isolated.    

pan-africanism or pan-africanism is a political, philosophical, cultural and social movement that promotes african twinning, the defense of the rights of african people and the unity of africa under a single sovereign state, for all africans, both africa as of the african diasporas.