Four years ago, UFC president Dana White announced plans to merge the WEC within the UFC, bringing over the likes of Jose Aldo, Dominick Cruz, Urijah Faber and others to the Octagon.

Since that decision, the promotion has added a flyweight division for male fighters and a bantamweight for females. In December, a strawweight female champion will be crowned.

Check out the video below to see the special announcement from four years ago, and thanks to MMA History Today for the find: