premise: The Monday Night War(s) is the common term describing the period of mainstream televised American professional wrestling from September 4, 1995, to March 26, 2001. During this time, the World Wrestling Federation's (WWF, now WWE) "Monday Night Raw" went head-to-head with World Championship Wrestling's (WCW) "Monday Nitro" in a battle for Nielsen ratings each week.
hypothesis: WWF became known as WWE between September 4, 1995, to March 26, 2001.
reason: WWF changed its name to WWE, but we don't know if it was during this time period.