Claim: Diana Ross had success in the United States.
Evidence: Ross ' success as lead singer of The Supremes made it possible for future African-American R&B and soul acts to find mainstream success.
Founded as the Primettes in Detroit , Michigan , in 1959 , the Supremes were the most commercially successful of Motown 's acts and are , to date , America 's most successful vocal group with 12 number one singles on the Billboard Hot 100.