Exactly.

George Washington abhorred political parties but after he left office they became a thing. Adams was a Federalist. And then there were the Democrat-Republicans who split into being Whigs and Democrats.

Andrew Jackson is considered to be the first Democrat President of the US. He won the election of 1828. And he served two terms before the Civil War. Abe Lincoln was the first Republican President. (He became one in 1856 before the Civil War, but was a Whig before that). So both current political parties were formed BEFORE the Civil War.

In fact, I am currently reading a book about the Andrew Jackson presidency that was published in the 1960's before the radical left took over our schools, books and classrooms. It is called "The Election of Andrew Jackson" by Robert V. Remini