Simplify the following text for a Grade 8 native English-speaking person.
Original: The 1960s and 1970s were a major boom period for the Olympic , as major wrestling events were held at the arena every other Friday night , as well as being the home to the roller-derby 's Los Angeles T-Birds .
Simplified: The 1960s and 1970s were a major boom period for the Olympic Auditorium , as major wrestling events were held at the arena every other Friday night . It was the home of the T-Birds , who played a game called `` Roller Derby '' .