The Simpsons first appeared as short animated segments on The Tracey Ullman Show.
The Simpsons premiered as a half-hour standalone series on Fox, marking the launch of the show as its own entity.
The Simpsons Movie was released in theaters, expanding the franchise into feature films.
The Simpsons was officially recognized as the longest-running prime time animated series in U.S. television history.
Springfield is founded by Jebediah Springfield.
Abraham Simpson, Homer's father, is born.
Mona Simpson, Homer's mother, is born.
Homer Simpson is born to Abraham and Mona Simpson.
Bart Simpson is born to Homer and Marge Simpson.
Lisa Simpson is born to Homer and Marge Simpson.
Maggie Simpson is born to Homer and Marge Simpson.
Bart begins his notorious prankster antics at Springfield Elementary.
Homer starts working as the safety inspector at the Springfield Nuclear Power Plant.
Homer prevents a catastrophic meltdown at the nuclear plant.
Lisa reveals her skill and passion for playing the saxophone.
In a famous event, baby Maggie shoots Mr. Burns.
The town of Springfield marks 200 years of history.