Final answer:
The highest selling album in history is 'Thriller' by Michael Jackson, with estimated sales of 66 million copies globally.
Step-by-step explanation:
The highest selling album in history is Michael Jackson's Thriller, which has sold an estimated 66 million copies worldwide.
This album, released in 1982, features iconic hits such as "Thriller," "Billie Jean," and "Beat It." The success of Thriller not only reflects Jackson's incredible talent and groundbreaking production but also the impact of innovative music videos and mass media appeal during that era.
The album's sales have continued to grow over the years, cementing its status as a global phenomenon in the music industry.