Why might washington have considered political parties based on geography to be dangerous

Why might G. Washington have considered political parties based on geography to be dangerous?

Explanation:

George Washington feared that political parties could divide the people and, therefore, the Union. He thought that political parties were dangerous in how they riled people up and poised their members against others. Whether or not that outweighs the benefits of parties is arguable, but that is a summarion of his beliefs.