What led to the information of political parties?

From 1796 to 1828 the first political parties were formed. During the time when our country was in its formative years, two opposing factions arose. ... However, efforts by the Democratic-Republican Party to influence people to the Anti-Federalist cause eventually weakened the Federalists.

an important point to remember about correlation is that while there is a _statistical_ relationship correlation does not equal _causation_

the first answer is: statistical

the second answer is: causation