Final answer:
Keith Richards and Mick Jagger formed The Rolling Stones after leaving their previous band, becoming an iconic rock group recognized worldwide.
Step-by-step explanation:
After Keith Richards and Mick Jagger left their earlier band, they formed what would become one of the most famous rock bands in history, The Rolling Stones. They did not join another band; instead, they rebranded and transformed their musical direction, which led them to international fame.
The Rolling Stones were formed in London in 1962 and included other members such as Brian Jones, Charlie Watts, and Bill Wyman, alongside Mick Jagger and Keith Richards.