Quiet riot was the first la group to open the door to nationwide prominence.
Step-by-step explanation:
The first group in the United states of America that got famous and known by every one in the country was the Quiet Riot. This was the group from Los Angeles.
This was a heavy American band which was found in the year 1973 and it was founded by the guitarist Randy Rhoades. The ranking of the band at VH1 is at the number 100th. The bassist of the band Kelly Garni is also one of the founders of this American band.