"Unity makes strength" is a motto that has been used by various states and entities throughout history. It is used by Belgium, Bulgaria, Haiti, Malaysia and Georgia on their coats of arms and is the national motto of Belgium, Bolivia, Malaysia, Georgia and Bulgaria.
Netherlands, gold ducat (1729) with the motto concordia res parvae crescent on the obverse, found in the Dutch East India Company (VOC) shipwreck 't Vliegend Hert