Nice! Thanks for all the suggestions! I watched slayzer play Piedmont Sardinia. I couldn't wait to play so I didn't watch too long I think I watched 3 episodes? Anyway, I had heard that if you take Korea or China early on you can become huge because of the huge population and resources. So as Piedmont Sardinia, I invaded Korea. I took Korea and then I started taking states from China. Long story short, I became a great power soon.
After many years where my whole army was stationed in Korea and China. I brought my army back to Piedmont to try to unify Italy. I had been trying to sphere the various Italian states with no luck. I sphered the Two Sicilies, and France had the Papal states. The rest were firmly entrenched in Austrian hands. I tried investing but it wasn't enough. My diplomats were permanently kicked out of all those Italian states. That was until Austria lost Great power status. I was perfectly in place to sphere all those states. Funny thing was, after I sphered Tuscany, I saw the little icon that comes up when there is a rebellion in one of the countries you sphered. I had seen how a successful rebellion can unsphere the country. I didn't want that so as usual, I sent my troops over to help crush the rebellion. And than after playing for a while another rebellion started in Tuscany. This second rebellion was a lot weaker than the one before. This was when I remembered reading about the Garibaldi event. I moused over the rebels and sure enough it was Garibaldi. OMG, what did I do!?!?!
Tuscany has a stack of 44k which had just helped me take Lombardy from Austria. Garibaldi has a 6k stack and three 3k stacks. France who has Papal States is #1 great power allied to a mega Russia who is vying for 5th place with me. This Russia had been taking land from Northern German Federation, Austria, Poland, Finland, China, etc. I think I just screwed myself.