The history of Anatolia (often referred to in historical sources as Asia Minor) can be roughly subdivided into: Prehistory of Anatolia (up to the end of the 3rd millennium BCE), Ancient Anatolia (including Hattian, Hittite and post-Hittite periods), Classical Anatolia (including Achaemenid, Hellenistic and Roman periods), Byzantine Anatolia (later overlapping, since the 11th century, with the gradual Seljuk and Ottoman conquest), Ottoman Anatolia (14th–20th centuries) and the Modern Anatolia, since the creation of the Republic of Turkey.