The 100 gained a massive following throughout its seven-season run on the CW, so why did The 100 season 8 never happen, and was it canceled? Did the series come to its natural end? Or were there outside circumstances that led to its cancelation? Here is the real reason behind why The 100 final season was the show's last, and its impact on the series finale. The 100 takes place nearly 100 years after a nuclear war destroyed all civilizations on Earth. The space station housing humanity's survivors sends 100 of its juvenile delinquents back to Earth in the hope of discovering how viable the planet is. But when the group makes it to Earth, they quickly realize that they are not alone. Under the leadership of two of their own, Clarke Griffin (Eliza Taylor) and Bellamy Blake (Bob Morley), the group fights for their survival in a desperate attempt to establish communication with their ship.

https://screenrant.com/100-season-7-cancelled-reason-ending-why/