Polish-Lithuanian Commonwealth in the context of "UAOC"

Wallachia is a geographical region of modern-day Romania, as well as one of the two historical Romanian principalities that laid the foundation for the establishment of the modern Romanian state. It is situated north of the Lower Danube and south of the Southern Carpathians. Wallachia was traditionally divided into two sections, Muntenia (Greater Wallachia) and Oltenia (Lesser Wallachia). Dobruja could sometimes be considered a third section due to its proximity and brief rule over it. Wallachia as a whole is sometimes referred to as Muntenia through identification with the larger of the two traditional sections.

Wallachia began to form as a principality around the 13th century, following the gradual unification of several smaller Romanian political entities. By 1330, the state had consolidated following Basarab I's victory in the Battle of Posada against the Kingdom of Hungary, ushering in a period of relative independence. In 1417, Wallachia was forced to accept the suzerainty of the Ottoman Empire for the first time; this suzerainty lasted until the mid-19th century. However in general Wallachia was able to preserve autonomy within the Empire as well as experience interruptions to Ottoman rule brought about by local rulers such as Vlad the Impaler and Michael the Brave and later external powers such as the Polish-Lithuanian Commonwealth and the Russian Empire.

The Ukrainian Autocephalous Orthodox Church (UAOC; Ukrainian: Українська автокефальна православна церква (УАПЦ), romanized: Ukrayinska avtokefalna pravoslavna tserkva (UAPTs)) was one of the three major Eastern Orthodox churches in Ukraine in the late 20th and early 21st centuries, together with the Ukrainian Orthodox Church – Kyiv Patriarchate (UOC-KP) and the Ukrainian Orthodox Church – Moscow Patriarchate (UOC-MP). It began in 1921 during the dissolution of the Russian Empire as part of the Ukrainian independence movement and in order to restore the Ukrainian Orthodox Church that existed in the Polish-Lithuanian Commonwealth in 1620–1685 and was annexed by the Moscow Patriarchate without approval of the Ecumenical Patriarchate of Constantinople. The UAOC came to an end in December 2018 as it united with the UOC-KP into the newly formed Orthodox Church of Ukraine (OCU).

The UAOC, in its contemporary form, has its origins in the synod of 1921 in Kyiv, shortly after Ukraine's newly found independence. It was re-established for the third time on 22 October 1989, right before the fall of the Soviet Union. Unlike the UOC-KP, the UAOC enjoyed no recognition by the rest of the Orthodox Christian community until 11 October 2018, when the Ecumenical Patriarchate of Constantinople lifted the excommunication which had afflicted both the UAOC and the UOC-KP. It was clarified on 2 November 2018, however, that the Ecumenical Patriarchate recognized neither the UAOC nor the UOC-KP as legitimate and that their respective leaders were not recognized as primates of their churches. On 15 December 2018, at the unification council of the Eastern Orthodox churches of Ukraine, the UAOC and the UOC-KP, along with metropolitans from the UOC-MP, unified into the OCU.

Ruthenia is an exonym, originally used in Medieval Latin, as one of several terms for Rus'. Originally, the term Rus' land referred to a triangular area, which mainly corresponds to the tribe of Polans in Dnieper Ukraine. Ruthenia was used to refer to the East Slavic and Eastern Orthodox people of the Grand Duchy of Lithuania and the Kingdom of Poland, and later the Polish-Lithuanian Commonwealth and Austria-Hungary, mainly to Ukrainians and sometimes Belarusians, corresponding to the territories of modern Belarus, Ukraine, Eastern Poland and some of western Russia.

Historically, in a broader sense, the term was used to refer to all the territories under Kievan dominion (mostly East Slavs).

Voivode (/ˈvɔɪvoʊd/ VOY-vohd), also spelled voivod, voievod or voevod and also known as vaivode (/ˈvaɪvoʊd, ˈveɪ-/ V(A)Y-vohd), voivoda, vojvoda, vaivada or wojewoda, is a title denoting a military leader or warlord in Central, Southeastern and Eastern Europe in use since the Early Middle Ages. It primarily referred to the medieval rulers of the Romanian-inhabited states and of governors and military commanders of Poles, Hungarian, Lithuanian, Balkan, Russian people and other Slavic-speaking populations.

In the Polish-Lithuanian Commonwealth, voivode was interchangeably used with palatine. In the Tsardom of Russia, a voivode was a military governor. Among the Danube principalities, and in Bohemia, voivode was considered a princely title.

The Kingdom of Galicia and Lodomeria, also known as Austrian Galicia or colloquially Austrian Poland, was a constituent possession of the Habsburg monarchy in the historical region of Galicia in Eastern Europe. The crown land was established in 1772. The lands were annexed from the Polish-Lithuanian Commonwealth as part of the First Partition of Poland. In 1804 it became a crown land of the newly proclaimed Austrian Empire. From 1867 it was a crown land within the Cisleithanian or Austrian half of the dual monarchy of Austria-Hungary. It maintained a degree of provincial autonomy. Its status remained unchanged until the dissolution of the monarchy in 1918.

The domain was initially carved in 1772 from the southwestern part of the Polish–Lithuanian Commonwealth. During the following period, several territorial changes occurred. In 1795 the Habsburg monarchy participated in the Third Partition of Poland and annexed additional Polish-held territory, that was renamed as West Galicia. That region was lost in 1809. Some other changes also occurred, by territorial expansion or contraction (1786, 1803, 1809, 1815, 1846, 1849). After 1849, borders of the crown land remained stable until 1918.

Volhynia or Volynia (/voʊˈlɪniə/ voh-LIN-ee-ə; see #Names and etymology) is a historic region in Central and Eastern Europe, between southeastern Poland, southwestern Belarus, and northwestern Ukraine. The borders of the region are not clearly defined, but in Ukraine it is roughly equivalent to Volyn Oblast, Rivne Oblast, and the northern part of the Khmelnytskyi Oblast and Ternopil Oblast. The territory that still carries the name is Volyn Oblast.

Volhynia has changed hands numerous times throughout history and been divided among competing powers. For centuries it was part of the Polish-Lithuanian Commonwealth. After the Russian annexation during the Partitions of Poland, all of Volhynia was made part of the Pale of Settlement on the southwestern border of the Russian Empire. Important cities include Rivne, Lutsk, Zviahel, and Volodymyr.

Poland–Russia relations have a long and often turbulent history, dating to the late Middle Ages. Over the centuries, there have been several wars between Poland and Russia, with Poland once occupying Moscow during the Commonwealth-era, and later Russia occupying Poland in the 19th and 20th centuries, leading to strained relations and multiple Polish attempts at re-acquiring independence. Polish–Russian relations entered a new phase following the fall of communism in 1989, with relations warming under Soviet premier Mikhail Gorbachev and later Russian president Boris Yeltsin. Relations began worsening considerably as a result of the Russian invasion of Georgia in 2008, and later the Russian annexation of Crimea in 2014 and especially the Russian invasion of Ukraine in 2022.

Relations between the Polish and Russian governments and their citizens have become increasingly hostile since the Russo-Ukrainian War. According to a 2022 poll, only 2% of Poles viewed Russia positively, the lowest number in the world among countries polled.