Ақ Русь: Тарихи аймақтың атауы мен географиясы

Archaic name for a historical region in Belarus
the geographical region

White Ruthenia (; Ruś Biała; Белая Русь; ) is one of the historical divisions of Kievan Rus' according to the color scheme, which also includes Black and Red Ruthenia. In the Late Middle Ages and Early Modern period, the name White Ruthenia was characterized by instability, designating a number of different regions on the territory of modern Belarus, Russia, and Ukraine. It is recorded mainly in Western European sources, starting from the middle of the 13th century.

Vasily Tatishchev believed that for the first time the term "White Rus'" is found in the Rostov chronicles in the year 1135, where the lands of Rostov Suzdal Principality were mentioned. Referring to the publications of the Pole Maciej Stryjkowski, Persian and other Eastern peoples who called the Russian princes "ak padishah"(white tsar), and the state "Ak Urus" (White Rus), the historian in his narrative extends this name to all Vladimir Rostov princes, starting with Yuri Dolgorukiy, and Andrei Bogolyubsky. He also calls the lands controlled by them "White Rus'", and calls the princes "White Russians" or "grand dukes of White Russia"

The praiseworthy songs composed in the second half of the XIV century by the Austrian poet Peter Suchenwirt tell how in 1349, in the battle of Izborsk ("Eysenburk" in the poem), German knights faced "Weizzen Reuzzen" ("White Russians"). However, it is known that it was a squad of Pskov and Izborsk people, led by Georgy Viktorovich, voivode of the Grand Duke of Lithuania Algirdas. On the world Fra's Mauro map (1459), the territory of Novgorod Moscow Rus' between Volga and White Sea is called White Russia (Rossia Biancha). This map gives the following explanation:

Many other variations of this name appeared on ancient maps; for instance, Russia Alba, Russija Alba, Wit Rusland, Weiß Reußen (Weißreußen), White Russia, Hviterussland, Hvíta Rússland, Weiß Russland (Weißrussland), Ruthenia Alba, Ruthénie Blanche and Weiß Ruthenien (Weißruthenien). The name was also assigned to various territories, often quite distant from that of present Belarus. According to Alfred Nicolas Rambaud:The name of White Russia is given to the provinces conquered from the 13th to the 14th century by the Grand Dukes of Lithuania. These were the ancient territories of the Krivitches, Polotchans, Dregovitches, Drevlians, Doulebes, now forming the governments of Vitepsk, Mohilef, and Minsk. The Lithuanian territories of Grodno, Novogrodek and Belostok were sometimes called Black Russia. An ethno religious theory suggests that the name used to describe the part of old Ruthenian lands within the Grand Duchy of Lithuania that had been populated mostly by Slavs who had been Christianized early, as opposed to Black Ruthenia, which was predominantly inhabited by pagan Balts. On the 1712 map of French cartographer Henri Chatelain "Russie noire" (Black Ruthenia) is placed in region of Eastern Galicia (today Western Ukraine), which traditionally known as "Russie rouge" (Red Ruthenia). Vasmer's dictionary mentions the dichotomy of "white" land and "taxed" land in Domostroy and speculates that "white" Rus' may have referred to the parts of Kievan Rus' that were not conquered by Golden Horde. Another speculation in Vasmer is that the color of the clothes of the White Ruthenians (perhaps as well as the color of their hair) may have contributed to the name. Oleg Trubachyov calls both theories "complete fantasies". Also, the 16th century chronicler Alexander Guagnini's book Sarmatiae Europeae descriptio wrote that Rus' was divided in three parts. The first part, under the rule of the Muscovite Grand Duke, was called White Ruthenia. The second one, under the rule of Polish king, was called Black Ruthenia. And the rest was Red Ruthenia. He also said Moscow was the center of White Rus' and the Russian metropolitanate, and that the Grand Duke of Moscow was called the White Czar, especially by his subjects. According to the late 19th century Geographical Dictionary of the Kingdom of Poland, White Ruthenia (Ruś Biała) constituted the Minsk, Mścisław, Połock, Smolensk and Witebsk voivodeships of the Polish–Lithuanian Commonwealth (before the Partitions of Poland), or the Mogilev Governorate, eastern parts of the Minsk and Vitebsk Governorates, the western half of the Smolensk Governorate, and the northern part of the Chernihiv Governorate, i. e. the central, northern and eastern parts of modern Belarus, and the western outskirts of modern Russia with Smolensk and Starodub. The largest cities in the region so defined today are Minsk, Gomel, Vitebsk, Mogilev, Smolensk and Babruysk.