Answer:
The middle class is a class of people in the middle of a social hierarchy. Its usage has often been vague whether defined in terms of occupation, income, education or social status. The definition by any author is often chosen for political connotations. Writers on the left favor the lower-status "working class". Modern social theorists—and especially economists—have defined and re-defined the term "middle class" in order to serve their particular social or political ends.
The assasination of the archduke of Austria, nationalism, alliances and militarism
Immigrant Aide Society raised money to move antislavery settlers into the new states.
By extending their arguments to address entire nations, some social Darwinists justified imperialism on the basis that the imperial powers were naturally superior and their control over other nations was in the best interest of human evolution.
