Answer:
The two parties from the First Party System in the United States emerged from the support of two different groups of people with different interests. They chose their names based on their values, being The Federalists strong defenders of the Constitution, order, and the federal administration, and the Democratic-Republicans a group which was completely decided to bring the Revolution to common people.
The Federalists were mainly supported by leaders of the mercantile economy such as traders, artisans and creditors (they were wealthier), and the Democratic-Republicans found their support in diverse sections of American society, such as popular farmers of the German, Scotish and Irish groups.
Finally, they found themselves in agreement regarding slavery, since even though they had different points of view, neither of them fully supported it.
