Most historic football rivalries in college?

I'm really interested in the cultural side of college, and I know sports, especially football, is a big part of that. Trying to understand more about this, could you guys name some of the most historic college football rivalries and provide a bit of background about why they're so significant?

Definitely, college football rivalries are an integral part of the campus culture that makes the whole college experience memorable. Here's a short list of some of the most famous and historic rivalries in college football:

1. Harvard vs. Yale: Known as "The Game", this college football rivalry has been ongoing since 1875. This is the epitome of Ivy League rivalries and encompasses more than just football. Given the academic prestige of these two universities, the rivalry extends to every aspect of campus life.

2. Army vs. Navy: This rivalry stretches back to 1890, and the game is usually held in December. The game stands for more than just a football match; it represents the close-knit community of military academies, discipline, and valiant service to the nation.

3. Ohio State vs. Michigan: First played in 1897, the Ohio State-Michigan rivalry is one of the most intense in college sports. They compete annually in "The Game," which often has Big Ten and national title implications.

4. Alabama vs. Auburn: Known as "The Iron Bowl", the Alabama vs. Auburn rivalry is one of the most passionate in all of collegiate sports, dating back to 1893. Apart from the competition on the field, it cuts across the state's societal and cultural aspects because these are the two largest colleges in Alabama.

5. USC vs. Notre Dame: This rivalry started in 1926, and it's unique since most major rivalries involve in-state teams, while these two are nearly 2,000 miles apart. The series has been home to many Heisman Winners and National Champions, with both teams frequently in the running for top honors.

These rivalries hold immense significance because they foster a sense of community, pride, and tradition for the students, alumni, and fans involved. The annual matches not only ignite passions but also serve as a bridge connecting the present to a rich and storied past.