Because their surname is Jackson and there were five members of the band.
Michael Jackson did not create the Jackson 5 his father did!
he was 5. when he first came out with his siblings and form a group call "jackson5"
After leaving the Jackson 5, Michael Jackson went on with his career.
Michael Jackson was in Gary Indiana when Jackson 5 was in process!
he did do the Jackson 5 medley I want you back the love you save I'll be there all by the Jackson 5
The first Jackson 5 album is "Diana Ross Presents: The Jackson 5".
Randy Jackson joined the Jackson 5 in 1976
Call of Duty ELITE Friday Night Fights - 2011 Rampage Jackson vs- Joe Carnahan 2-5 was released on: USA: 8 June 2012
Aliya Jackson is 5' 5".
Elaine Jackson is 5' 5".
Fritzi Jackson is 5' 5".
Milauna Jackson is 5' 5".