Overcome your differences.

After having a highly publicized, four year feud with Nas, Jay-Z buried the hatchet by inviting his former rival, to join him on stage at the ‘I Declare War’ concert in 2005, where they reconciled their past beef.  The following year, while president of Def Jam, Carter signed Nas to a recording deal and the two appeared on each other’s next albums, American Gangster and Hip-Hop Is Dead respectively.