The main plotpoint of
Captain America: Civil War was the conflict between Steve Rogers and Tony Stark, and during audio commentary for the Blu-Ray, Christopher Markus & Stephen McFeely revealed how the short-lived
Agent Carter TV series laid the groundwork for the growing tension between Captain America and Iron Man.
"
We wanted to make sure in the final episode of season 1 of Agent Carter that Howard said something to the effect of ‘Steve Rogers is the greatest thing I ever did.'” As
FSR points out, this "sets up the rivalry between Tony, and his ‘greatest’ creation, Steve". This was actually touched upon in the first
Avengers movie
when Tony references what his father thought of Steve, but was never explored any further until
Civil War.
Captain America: Civil War is available on Digital HD now, and will be released on Blu-ray, DVD, and VOD on September 13th, 2016.