The championship was introduced in November 1980 when Georgia Tag Team Champions the Fabulous Freebirds (Michael Hayes, Buddy Roberts, and Terry Gordy) won a tournament to determine the first champions, defeating Stan Frazier and Robert Fuller in the final. They were introduced as the Georgia and National Tag Team Champions and carried a trophy to the ring representing the National title as they wore belts which represented the Georgia title.
The National Tag Team Championship continued to be represented by a trophy until Thanksgiving Night in 1981, when the promotion awarded newly-made belts (modeled after the old Georgia tag team belts, which the National title replaced) to the winners of its annual turkey night tag team tournament. The father and son duo of Bob and Brad Armstrong defeated Mr. Fuji and Mr. Saito in the final to win the vacant NWA National Tag Team Championship.
When Vince McMahon bought Georgia Championship Wrestling, Inc., the champions at that time were Ron Garvin & Jerry Oates. Since Oates and Garvin did not sign with McMahon's WWF, and McMahon chose not to continue recognizing the National Tag Team Championship, that version of the title basically ended on the day known as Black Saturday.
However, a new startup group called Championship Wrestling from Georgia decided to recognize the NWA National Tag Team Championship. They put the belts on Garvin and Oates, carrying on the lineage started with Georgia Championship Wrestling.
When Jim Crockett Promotions bought the TBS slot from the WWF in 1985, it essentially merged with Championship Wrestling from Georgia (getting CWG's Saturday morning timeslot as well) and continued on with CWG's National Tag Team Championship. The National Tag Team Championships were stripped from the Andersons and renamed the U.S. Tag Team team title and re-established in a tournament.
This version of the U.S. Tag Team title continued on after Turner Broadcasting bought out JCP and started World Championship Wrestling but was abandoned for good in 1992.