The Japanese anime industry dates back many decades, and this industry underwent all kinds of changes and evolution as generations passed. Japanese anime drew heavy inspiration from Disney animation at first, gradually developing a voice of its own, complete with genres like mecha anime and isekai, which are now associated mostly with Japanese anime. In the 20th century, all these factors and more made anime great, but in the 21st century, anime was truly taken to the next level.
Source：https://www.cbr.com/modern-anime-vs-classic-anime/
