Original: IP was founded by Syed Shahabuddin in 1989 as a split from the Janata Party, as a protest against the tie-up between V.P. Singh and Bharatiya Janata Party.
Simplified: It was founded by Syed Shahabuddin in 1989 as a split from the Janata Party - it formed  as a protest against the alliance between V.P. Singh and the right wing Bharatiya Janata Party.