Short answers, pulled from the story.
Fleetwood Mac was formed in London during July 1967 when Peter Green left John Mayall & the Bluesbreakers. He named the group by combining the surnames of drummer Mick Fleetwood and bassist John McVie.
Peter Green quit the band after their European tour ended on the 20th of May 1970 following a mental state deterioration caused by an acid trip in Munich. His departure marked the end of the band's early all-blues era before they shifted toward rock styles.
The Rumours album had sold forty million copies worldwide by 2003 according to sales figures cited in the text. It also achieved diamond certification from the RIAA for exceeding ten million shipments within the United States alone.
Clifford Davis claimed ownership of the name Fleetwood Mac after recruiting musicians from another band called Legs to perform under the title New Fleetwood Mac. The legal dispute lasted four years before settling out of court allowing original members to resume using the name again.
Stevie Nicks died on the 30th of November 2022 at age seventy-nine. Her passing led her to believe that the band would end without Christine McVie who had already passed away earlier.