that in the latter part of the 14th century the southern part of the region was under the rule of Wallachia (the ruling dynasty of Wallachia during that period was called Basarab). In the 15th century, the entire region was a part of the principality of Moldavia. Stephen the Great ruled between 1457 and 1504, a period of nearly 50 years during which he won 32 battles defending his country against virtually all his neighbours (mainly the Ottomans and the Tatars, but also the Hungarians and the Poles) while losing only two. During this period, after each victory, he raised a monastery or a church close to the battlefield honoring Christianity. Many of these battlefields and churches, as well as old fortresses, are situated in Bessarabia (mainly along Dniester). In 1484, the Turks invaded and captured Chilia and Cetatea Albă (Akkerman in Turkish), and annexed the shoreline southern part of Bessarabia, which was then divided into two sanjaks (districts) of the Ottoman Empire. In 1538, the Ottomans annexed more Bessarabian land in the south as far as Tighina, while the central and northern Bessarabia remained part of the Principality of Moldavia (which became a vassal of the Ottoman Empire). Between 1711 and 1812, the Russian Empire occupied the region five times during its wars against the Ottoman and Austrian Empires. Annexation by the Russian Empire By the Treaty of Bucharest of May 28, 1812—concluding the Russo-Turkish War of 1806-1812—the Ottoman Empire ceded the land between the Pruth and the Dniester, including both Moldavian and Turkish territories, to the Russian Empire. That entire region was then called Bessarabia. In 1814, the first German settlers arrived and mainly settled in the southern parts, and Bessarabian Bulgarians began settling in the region too, founding towns such as Bolhrad. Between 1812 and 1846, the Bulgarian and Gagauz population migrated to the Russian Empire via the River Danube, after living many years under oppressive Ottoman rule, and settled in southern Bessarabia. Turkic-speaking tribes of the Nogai horde also inhabited the Budjak Region (in Turkish Bucak) of southern Bessarabia from the 16th to 18th centuries but were totally driven out prior to 1812. Administratively, Bessarabia became an oblast of the Russian Empire in 1818, and a guberniya in 1873. By the Treaty of Adrianople that concluded the Russo-Turkish War of 1828-1829 the entire Danube Delta was added to the Bessarabian oblast. According to Vasile Stoica, emissary