Final answer:
The best-selling musical artist from 2000 to 2010 born in Missouri is Eminem, who took his stage name from his initials, M.M.
Step-by-step explanation:
The musical artist in question, born in Missouri in 1972 and achieving best-selling status in the U.S. from 2000 to 2010, is none other than Eminem, whose real name is Marshall Bruce Mathers III. His stage name, Eminem, derives from his initials, M.M. Eminem is known for his influential role in hip-hop and his storytelling abilities within his lyrics, having no direct musical correlation to Elvis Presley or Chuck Berry.
However, Eminem, like the artists mentioned, has had a significant impact on his genre and has contributed to the cultural landscape of American music.