Sam/Steve
I don't know what overlaps and what doesn't.
An AI went nuts. Was going to create a life ending event by dropping part of Sokovia from roughly 50K feet. The Avengers stopped it, but there were casualties and damage. Some time later we were on a mission to stop some terrorists. Things went south. There were more casualties and fatalities. The United States government along with 13 other nations decided the Avengers shouldn't be autonomous. They created the Sokovia Accords which would give the reins to these governments. Any Avenger that didn't sign the Accords were...encouraged...to retire. I couldn't do that. You, Clint, Wanda, Bucky and Scott came with me. Things happened. Everyone but Bucky and I were caught and locked up. Bucky and I busted you out.