Complex sentence: It is the only active championship in WWE that was not originated in the promotion, as it was originally created by and promoted in Mid-Atlantic Championship Wrestling (later known as Jim Crockett Promotions and then World Championship Wrestling).
Split into simpler sentences: It is the only active championship in WWE that was not originated in the promotion. It was originally created by and promoted in Mid-Atlantic Championship Wrestling (later known as Jim Crockett Promotions and then World Championship Wrestling).