Plums may be one of the first fruits domesticated in Europe. Remains of our modern European plum (Prunus domestica) from neolithic times (over 5000 years ago) are only found around human settlements. Subspecies of Prunus domestica include damsons and bullaces, prunes, Victoria plums, greengages, and mirabelle plums.
Cherry plums (Prunus cerasifera) are the ancestor of our modern plums, and they are still found growing wild in places. They are native to Southeast Europe and Western Asia.
Several different species of plums were domesticated in China in ancient times. North America has a dozen or so species of wild plum.