Upper Hungary in the context of "First Czechoslovak Republic"

The Slovak uprising of 1848–1849 (Slovak: Slovenské povstanie), Slovak Volunteer Campaigns (Slovak: Slovenské dobrovoľnícke výpravy), Slovak Revolt or the Slovak Revolution occurred in Western parts of Upper Hungary (today mostly Western Slovakia) with the aim of equalizing Slovaks, democratizing political life and achieving social justice within the 1848–49 revolutions in the Habsburg Monarchy. It lasted from September 1848 to November 1849. In October 1848, Slovak leaders replaced their original Hungaro-federal program by Austro-federal, called for the separation of a Slovak district (Slovak: Slovenské Okolie) from the Kingdom of Hungary and for the formation of a new autonomous district within the framework of the Habsburg Monarchy.

Mieszko II Lambert (Polish pronunciation: [ˈmjɛʂkɔ ˈdruɡʲi ˈlambɛrt] ; c. 990 – 10/11 May 1034) was King of Poland from 1025 to 1031 and Duke from 1032 until his death.

He was the second son of Bolesław I the Brave but the eldest born from his third wife, Emnilda of Lusatia. He organized two devastating invasions of Saxony in 1028 and 1030. Then, he ran a defensive war against Germany, Bohemia and the Kievan princes. Mieszko II was forced to escape from the country in 1031 after an attack by Yaroslav I the Wise, who installed Mieszko's older half-brother Bezprym on the Polish throne. Mieszko II took refuge in Bohemia, where he was imprisoned by Duke Oldrich. In 1032 he regained power in one of Poland's three districts, then united the country, making good use of the remaining power structures. At this time, several Polish territorial acquisitions of his father were lost: Upper Lusatia (also known as Milsko), part of Lower Lusatia, Red Ruthenia, the western and central parts of Upper Hungary (now Slovakia) and probably Moravia.

Matthias Corvinus (Hungarian: Hunyadi Mátyás; Romanian: Matia/Matei Corvin; Croatian: Matija/Matijaš Korvin; Slovak: Matej Korvín; Czech: Matyáš Korvín; 23 February 1443 – 6 April 1490) was King of Hungary and Croatia from 1458 to 1490, as Matthias I. He is often given the epithet "the Just". After conducting several military campaigns, he was elected King of Bohemia in 1469 and adopted the title Duke of Austria in 1487. He was the son of John Hunyadi, Regent of Hungary, who died in 1456. In 1457, Matthias was imprisoned along with his older brother, Ladislaus Hunyadi, on the orders of King Ladislaus the Posthumous. Ladislaus Hunyadi was executed, causing a rebellion that forced King Ladislaus to flee Hungary. After the King died unexpectedly, Matthias's uncle Michael Szilágyi persuaded the Estates to unanimously proclaim the 14-year-old Matthias as king on 24 January 1458. He began his rule under his uncle's guardianship, but he took effective control of government within two weeks.

As king, Matthias waged wars against the Czech mercenaries who dominated Upper Hungary (today parts of Slovakia and Northern Hungary) and against Frederick III, Holy Roman Emperor, who claimed Hungary for himself. In this period, the Ottoman Empire conquered Serbia and Bosnia, terminating the zone of buffer states along the southern frontiers of the Kingdom of Hungary. Matthias signed a peace treaty with Frederick III in 1463, acknowledging the Emperor's right to style himself King of Hungary. The Emperor returned the Holy Crown of Hungary with which Matthias was crowned on 29 March 1464. In this year, Matthias invaded the territories that had recently been occupied by the Ottomans and seized fortresses in Bosnia. He soon realized he could expect no substantial aid from the Christian powers and gave up his anti-Ottoman policy.

The Treaty of Szatmár (or the Peace of Szatmár) was a peace treaty concluded at Szatmár (present-day Satu Mare, Romania) on 29 April 1711 between the House of Habsburg emperor Charles VI, the Hungarian estates and the Kuruc rebels. It formally ended Rákóczi's War of Independence, which had endured since 1703.

In the Great Turkish War, the forces of the Habsburg monarchy conquered large parts of Ottoman Hungary. However, the new rulers soon met with resistance by the Hungarian magnates led by Francis II Rákóczi, culminating in the rebellion led by Rákóczi, which from 1703 onwards spread throughout Upper Hungary (today mostly Slovakia), Transylvania and Carpathian Ruthenia. The rebels were decisively defeated by a Habsburg army under Field marshal Sigbert Heister, backed by Rascian forces, in the 1708 Battle of Trencsén. As the conflict rumbled on, the Hofkriegsrat president Prince Eugene of Savoy appointed the loyal Hungarian Field Marshal János Pálffy chief negotiator. In November 1710, Pálffy contacted the Kuruc commander Sándor Károlyi and achieved a truce on 13 January 1711.

The Zipser Germans, Zipser Saxons, or, simply, just Zipsers (German: Zipser or Zipser Deutsche, Romanian: Țipțeri, Hungarian: Cipszer, Cipszerek, or Szepességi szászok, Slovak: Spišskí Nemci) are a German-speaking (more specifically Zipser German-speaking as native dialect) sub-ethnic group in Central-Eastern Europe, part of the German diaspora, and national minority in both Slovakia and Romania (there are also Zipser German settlements in the Zakarpattia Oblast, in the historical region of Carpathian Ruthenia, present-day western Ukraine). Along with the Sudeten Germans (German: Sudetendeutsche), the Zipser Germans were one of the two most important ethnic German groups in the former Czechoslovakia. An occasional variation of their name as 'Tzipsers' can also be found in academic articles. Former Slovak President Rudolf Schuster is partly Zipser German and grew up in Medzev (German: Metzenseifen).

The Zipser Germans were previously native to the Szepes County (German: Zips; Slovak: Spiš, Hungarian: Szepes) of Upper Hungary—today mostly north-eastern Slovakia—as that region was settled by colonists from present-day central Germany (and other parts of contemporary Germany) during the High Middle Ages, more specifically beginning in the mid 12th century, as part of the Ostsiedlung. Beginning in at least the 18th century, many members of this German ethnic sub-group migrated to southern Bukovina, Maramureș, Transylvania, and in the mountainous Banat (all of the aforementioned regions situated in contemporary Romania). Most of the Zipser German community in Romania lives in Maramureș County and across the Rodna Mountains respectively.

The Czechoslovak Legion (Czech: Československé legie; Slovak: Československé légie) were volunteer armed forces consisting predominantly of Czechs and Slovaks fighting on the side of the Entente powers during World War I and the White Army during the Russian Civil War until November 1919. Their goal was to win the support of the Allied Powers for the independence of the Lands of the Bohemian Crown from the Austrian Empire, and of Upper Hungary from the Kingdom of Hungary, which were then part of the Austro-Hungarian Empire. With the help of émigré intellectuals and politicians such as the Czech Tomáš Garrigue Masaryk and the Slovak Milan Rastislav Štefánik, they grew into a force of over 100,000 troops.

In Russia, they took part in several victorious battles of the war, including the Zborov and Bakhmach against the Central Powers, and were heavily involved in the Russian Civil War fighting Bolsheviks, at times controlling the entire Trans-Siberian railway and several major cities in Siberia.