That all people should be treated as equal and no one group of people are inferior to another.
By today's standards this period in the US wasn't very democratic, since minorities and women and poor people could not vote. It became less equal because of wealth disparities.
All of them are necessary
Niccolo Machiavelli wrote <em>The Prince </em>as a guide to success in 2. politics. The book provides advice to a ruling individual in Italy. The book itself provided a very cynical outlook on rulership with the most famous line being (paraphrased) "it is better to be feared than loved."