Original: The event was created in 2001 , with its inaugural event taking place on December 9 , 2001 at the San Diego Sports Arena in San Diego , California , replacing Armageddon for that year due to the possible insensitivity of the latter 's name with respect to the September 11 attacks .
Simplified: The event started as a pay-per-view under the name Vengeance in 2001 , replacing Armageddon for that year due to the possible insensitivity of the latters name with respect to the September 11 attacks .