The filmmakers in Japan did not have a lot of money to make their movies and not a lot of places where they could film their movies. The people that the filmmakers could use as actors in their movies was also a problem for making Japanese movies. Japanese people look different from people in other places in the world (e.g. If the movie's theme were about Vikings, Ancient Rome or the Black Death pandemic in Medieval Europe, for example), and it was hard for filmmakers to make a movie about places other than Japan with Japanese actors. Movie makers liked animation because then they could have animator draw other places and people that could not be filmed in a normal movie, and the animators could be very creative with the cartoons they made.