On August 17, 1908, Cohl released the cartoon “Fantasmagorie”

Fantasmagorie is a 1908 French animated film by Émile Cohl. It is one of the earliest examples of traditional (hand-drawn) animation, and considered by film historians to be the first animated cartoon.
https://en.wikipedia.org/wiki/Fantasmagorie_(1908_film)

Émile Cohl is one of the earliest pioneers of animation, along with John Stuart Blackton. Together they laid the foundations of the medium in the early 1900s, with simple caricatures and stick figures. Cohl goes down in history as the creator of the first genuine fully animated cartoon: ‘Fantasmagorie’ (1908). He was also the first to adapt a comic strip into a regular animated film series. Cohl was furthermore a well-known caricaturist in his day and made a few comics himself.
https://www.lambiek.net/artists/c/cohl_emile.htm