Transylvania backed by the mobilization of Romanian troops, proclaimed Union with Romania on 1 December 1918. The "Proclamation of Union" of Alba Iulia was adopted by the Deputies of the Romanians from Transylvania, and supported one month later by the vote of the Deputies of the Saxons from Transylvania. The national holiday of Romania, the Great Union Day (also called "Unification Day") occurring on December 1, celebrates this event. The holiday was established after the Romanian Revolution, and marks the unification not only of Transylvania, but also of the provinces of Banat, Bessarabia and Bukovina with the Romanian Kingdom. These other
Transylvania Mounds and in height. The site underwent limited archaeological testing in the 1960s. These tests dated occupation of the site about 700–1200 CE during the Coles Creek period. Other ceramics discovered at the site were dated to 1200–1541 during the Plaquemine Mississippian period. A series of radiocarbon samples returned dates between 1048 and 1411 CE. These investigations prompted archaeologists to use the Transylvania site as the type site for the "Transylvania Phase (1500-1680 CE)" of the local Tensas Basin Plaquemine Mississippian chronology. When the site was mapped in 2000 investigators were able to identify six remaining mounds. Transylvania Mounds Transylvania Mounds