WordNet sense 1 (formed or united into a whole):

incorporate, unified, merged, incorporate

WordNet sense 2 (characterized by unity; being or joined into a single entity):

united

WordNet sense 3 (organized and maintained as a legal corporation):

corporate

WordNet sense 4 (formed into a structured or coherent whole):

organized

WordNet sense 5 (formed into a whole or introduced into another entity):

integrated