1) Became one 2) Came together 3) Caused to unite 4) Coalesced 5) Combined 6) Combined together 7) English phrase 8) Entered traffic 9) Formed or united into a whole 10) Incorporate 11) Incorporated 12) Integrated 13) Joined 14) Joined forces 15) Married 16) Unified 17) United Found on https://www.crosswordclues.com/clue/merged