The Confederate States of America were formed in February 4, 1861 and the last Confederate army surrendered on May 5, 1865.
Here's a list of things that lasted longer than the history the Confederate flag represents:
1. Party of Five
2. Ghostbusters Cereal
3. The Microsoft Zune
4. LFO
5. Total Request Live
6. Vince & Larry, the Crash Test Dummies
7. Original New York Seltzer
8. Eek! The Cat
9. Jennifer Aniston & Brad Pitt's Marriage
10. The Recording of Guns N' Roses' Chinese Democracy
11. Squeezeits
12. LaTavia Roberson & LeToya Luckett's Tenure in Destiny's Child
13. Teen People
14. The Amount of Time The Cast of Beverly Hills, 90210 Spent in High School
Lasted: 5 years (The crew were juniors during the first season, but retconned to having been sophomores in season 2)