According to the RIAA: Which artist has sold the most albums by the million?

According to the Recording Industry Association of America (RIAA), The Beatles have sold the most albums by the million. This is primarily due to their immense popularity and widespread appeal during the height of Beatlemania in the 1960s. Their innovative music, infectious melodies, and cultural impact captivated a global audience, resulting in record-breaking sales throughout their career. Their pioneering work in rock and pop music, combined with their massive fan base, solidified their position as one of the best-selling artists of all time.