Simplify the following text for a Grade 9 native English-speaking person.
Original: The movement developed as a reaction against various musical and cultural trends in the late 1980s and early 1990s , particularly the grunge phenomenon from the United States .
Simplified: This kind of music began as a reaction against some trends , or styles , in the late 1980s and early 1990s , such as grunge from the United States .