Political science investigates the phenomena of government, as political economy deals with wealth, biology with life, statistics with numbers, and geometry with space and magnitude
A community of persons, more or less numerous, permanently occupying a fixed territory, and possessed of an independent government organized for political ends to which the great body of inhabitants render habitual obedience
The supreme and uncontrollable power inherent in a state, including legal sovereignty (authority to issue final commands) and political sovereignty (power behind the legal sovereign)