Ruthenians in the context of "Union of Brest"

Bukovina is a historical region at the crossroads of Central and Eastern Europe. It is located on the northern slopes of the central Eastern Carpathians and the adjoining plains, today divided between Romania and Ukraine.

Inhabited by many cultures and peoples, settled by both Ukrainians (Ruthenians) and Romanians (Moldavians), it became part of the Kievan Rus' and Pechenegs' territory early on during the 10th century and an integral part of the Principality of Moldavia in the 14th century where the capital of Moldavia, Suceava, was founded, eventually expanding its territory all the way to the Black Sea.

Ukrainians (Ukrainian: українці, romanised: ukraintsi, pronounced [ʊkrɐˈjin⁽ʲ⁾ts⁽ʲ⁾i]) are an East Slavic ethnic group native to Ukraine. Their native tongue is Ukrainian, and the majority adhere to Eastern Orthodoxy, forming the second largest ethno-linguistic community. At around 46 million worldwide, Ukrainians are the second largest Slavic ethnic group after Russians.

Ukrainians have been given various names by foreign rulers, which have included Polish–Lithuanian Commonwealth, the Habsburg monarchy, the Austrian Empire, and then Austria-Hungary. The East Slavic population inhabiting the territories of modern-day Ukraine were known as Ruthenians, referring to the territory of Ruthenia; the Ukrainians living under the Russian Empire were known as Little Russians, named after the territory of Little Russia.

The Zaporozhian Cossacks or Zaporizhian Cossacks, also known as the Zaporozhian Cossack Army or the Zaporozhian Host (Ukrainian: Військо Запорозьке, romanized: Viisko Zaporozke), were Cossacks who lived beyond (that is, downstream from) the Dnieper Rapids. They were predominantly Ruthenians, but also included other ethnic groups (most notably their legendary Kosh Otaman Ivan Sirko was of Moldavian origin). Along with Registered Cossacks and Sloboda Cossacks, Zaporozhian Cossacks played an important role in the history of Ukraine and the ethnogenesis of Ukrainians.

The Zaporozhian Sich grew rapidly in the 15th century from serfs fleeing the more controlled parts of the Polish–Lithuanian Commonwealth. The least controlled region, that was located between the Dniester and mid-Volga was first known from the 15th century as the Wild Fields, which was subject to colonization by the Zaporozhian Cossacks. Zaporozhian Host became established as a well-respected political entity with a parliamentary system of government. During the course of the 16th, 17th and well into the 18th century, the Zaporozhian Cossacks were a strong political and military force that challenged the authority of the Polish–Lithuanian Commonwealth, the Tsardom of Russia, and the Crimean Khanate.

The Khmelnytsky Uprising, also known as the Cossack–Polish War, Khmelnytsky insurrection, or the National Liberation War, and Cossack Revolution, was a successful Cossack rebellion with elements of religious war that took place between 1648 and 1657 in the eastern territories of the Polish–Lithuanian Commonwealth, resulting in Cossack victory and the creation of the Cossack Hetmanate in present-day Ukraine. Under the command of Cossack Hetman Bohdan Khmelnytsky, the Zaporozhian Cossacks, allied with the local Ruthenian (Ukrainian) peasantry and initially the Crimean Tatars, fought against the Commonwealth's forces. The war was accompanied by mass atrocities committed by Cossacks against prisoners of war and the civilian population, especially Poles, Jews, Roman Catholic and Ruthenian Uniate clergy, as well as savage reprisals by the Polish szlachta and the loyalist Jeremi Wiśniowiecki, the voivode of Ruthenian descent (military governor) of the Ruthenian Voivodeship.

The uprising has a symbolic meaning in the history of Ukraine's relationship with Poland and Russia. It ended the Polish Catholic szlachta's domination over the Ukrainian Orthodox population; at the same time, it led to the eventual incorporation of eastern Ukraine into the Tsardom of Russia initiated by the 1654 Pereiaslav Agreement, whereby the Cossacks would swear allegiance to the tsar while retaining a wide degree of autonomy. The event triggered a period of political turbulence and infighting in the Hetmanate known as the Ruin. The success of the anti-Polish rebellion, along with internal conflicts in Poland and concurrent invasions waged by Russia and Sweden against the Poles, ended the Polish Golden Age and caused a secular decline of Polish power during the period known as "the Deluge".

Magyarization (UK: /ˌmædʒəraɪˈzeɪʃən/ US: /ˌmɑːdʒərɪ-/, also Hungarianization; Hungarian: magyarosítás [ˈmɒɟɒroʃiːtaːʃ]), after "Magyar"—the Hungarian autonym—was an assimilation or acculturation process by which non-Hungarian nationals living in the Kingdom of Hungary, then part of the Austro-Hungarian Empire, adopted the Hungarian national identity and language in the period between the Compromise of 1867 and Austria-Hungary's dissolution in 1918. Magyarization occurred both voluntarily and as a result of social pressure, and was mandated in certain respects by specific government policies.

Before World War I, only three European countries declared ethnic minority rights, and enacted minority-protecting laws: the first was Hungary (1849 and 1868), the second was Austria (1867), and the third was Belgium (1898). In contrast, the legal systems of other pre-WW1 era European countries did not allow the use of European minority languages in primary schools, in cultural institutions, in offices of public administration and at the legal courts.

The Ruthenian Uniate Church (Belarusian: Руская уніяцкая царква, romanized: Ruskaja unijackaja carkva; Ukrainian: Руська унійна церква, romanized: Ruśka unijna cerkva; Latin: Ecclesia Ruthena unita; Polish: Ruski Kościół Unicki) was a particular church of the Catholic Church in the territory of the Polish–Lithuanian Commonwealth. It was created in 1595/1596 by those clergy of the Eastern Orthodox Church who subscribed to the Union of Brest. In the process, they switched their allegiances and jurisdiction from the Ecumenical Patriarchate of Constantinople to the Holy See.

The church had a single metropolitan territory — the Metropolis of Kiev, Galicia and all Ruthenia. The formation of the church led to a high degree of confrontation among Ruthenians, such as the murder of Archeparch Josaphat Kuntsevych in 1623. Opponents of the union called church members "Uniates". Catholic documents today no longer use this term due to its perceived negative overtones.

The First Czechoslovak Republic emerged from the collapse of the Austro-Hungarian Empire in October 1918. The new state consisted mostly of territories inhabited by Czechs and Slovaks, but also included areas containing majority populations of other nationalities, particularly Germans (22.95 %), who accounted for more citizens than the state's second state nation of the Slovaks, Hungarians (5.47 %) and Ruthenians (3.39 %). The new state comprised the total of Bohemia whose borders did not coincide with the language border between German and Czech. Despite initially developing effective representative institutions alongside a successful economy, the deteriorating international economic situation in the 1930s gave rise to growing ethnic tensions. The dispute between the Czech and German populations, fanned by the rise of Nazism in neighbouring Germany, resulted in the loss of territory under the terms of the Munich Agreement and subsequent events in the autumn of 1938, bringing about the end of the First Republic.

Upper Hungary (Hungarian: Felvidék, "Upland"), is the area that was historically the northern part of the Kingdom of Hungary, now mostly present-day Slovakia. The region has also been called Felső-Magyarország (literally: "Upper Hungary"; Slovak: Horné Maďarsko). However, the Slovaks use the term 'Horné Uhorsko', which translates as "Upper Hungary", with the term "Hungary" having no connection to the "land of the Magyars" etymology.

During the Habsburg–Ottoman wars, Upper Hungary meant only the northeastern parts of the Hungarian Kingdom. The northwestern regions (present-day western and central Slovakia) belonged to Lower Hungary. Sometime during the 18th or 19th century, Upper Hungary began to imply the whole northern regions of the kingdom. The population of Upper Hungary was mixed and mainly consisted of Slovaks, Hungarians, Germans, Ashkenazi Jews and Ruthenians. The first complex demographic data are from the 18th century, in which Slovaks constituted the majority population in Upper Hungary. Slovaks called this territory "Slovensko" (Slovakia), which term appears in written documents from the 15th century, but it was not precisely defined and the region inhabited by Slovaks held no distinct legal, constitutional, or political status within Upper Hungary.