Transylvania as originally defined in Treaty of Trianon, 27 years earlier, thus confirming the return of Northern Transylvania to Romania. From 1947 to 1989, Transylvania, along with the rest of Romania, was under a communist regime. The ethnic clashes of Târgu Mureș occurred between ethnic Romanians and Hungarians in March 1990 after the fall of the communist regime and became most notable inter-ethnic incident in the post-communist era. The Transylvanian Plateau, high, is drained by the Mureș, Someș, Criș, and Olt rivers, as well as other tributaries of the Danube. This core of historical Transylvania roughly corresponds with nine counties of
Transylvania Mounds Transylvania Mounds Transylvania Mounds is an archaeological site in East Carroll Parish, Louisiana with components from the Coles Creek (700–1200)CE and Plaquemine/Mississippi periods (1200–1541). It is the type site for the "Transylvania Phase (1500-1680 CE)" of the Tensas Basin Plaquemine Mississippian chronology. A large multimound site with two plazas and possibly as many as twelve mounds. The largest mound at the site was in height and was flanked on two sides by the plazas. Several of the mounds are no longer visible because intensive European farming methods have leveled them. The ones that do remain are , , , ,