Simplify the following text for a Grade 7 native English-speaking person.
Original: In the United States , on September 2 , 2001 , Cowboy Bebop became the first anime title to be shown as part of the U.S. Cartoon Network 's Adult Swim programming block .
Simplified: Cowboy Bebop first aired in the United States in 2001 on Cartoon Network 's Adult Swim .