Complex sentence: In an effort to improve the quality of the animation, production of the 1965 syndicated cartoons was taken over by Hanna-Barbera, making it one of the few cartoons to be produced by two different studios.
Split into simpler sentences: In an effort to improve the quality of the animation, production of the 1965 syndicated cartoons was taken over by Hanna-Barbera. Thus it became one of the few cartoons to be produced by two different studios.