Empire was a NBC one hour 'modern western' that lasted one season in 1962-63.
Its 32 episodes were in color and the production values were excellent.
Former movie star Richard Egan starred as Jim Redigo, foreman of an enormous ranch in Texas owned by the very wealthy Garrett family: they had oil fields, cattle and a timber business. (The series was shown as "Garrett" in England).
Among the costars were Ryan O'Neal, as the young Garrett heir, and, for the second half of the season, Charles Bronson, as one of the workers.
Kathleen Hite, writer of some of Gunsmoke's most memorable scripts, was the show's creator.
After one season, Egan repeated his role as Jim Redigo in a second season: the series' name became Redigo, and it was shortened to 30 minutes. It lasted just 30 episodes, but it was also very good, although not as good as Empire, which was a great drama.
In short, with all these ingredients, including future superstars like O'Neal and Bronson, I've never understood why Empire hasn't come out on DVD