Czech Republic–Slovakia relations
Before 1918, both countries were part of Austria–Hungary. However, after the Ausgleich of 1867 Czechia belonged to the Austrian Empire while Slovakia belonged to the administratively separate Kingdom of Hungary, and between 1918 and December 31, 1992, both countries were part of Czechoslovakia. 
Both countries established diplomatic relations on January 1, 1993. These international relations are usually referred to or described as "very good", "cordial", and "above standard" in the media. When a Czech or Slovak president is inaugurated, very often his first international visit is to the former part of the common country. The same custom applies to newly elected prime ministers of the Czech Republic and Slovakia.
František Chvalkovský
The Munich Agreement ended the First Republic of Czechoslovakia. Its previous pro-democratic and anti-totalitarian policies gave way to calls for authoritarian government and closer cooperation with Nazi Germany (more: ). The political elite, connected with former President Edvard Beneš, had to leave office and Chvalkovský became foreign minister. He tried to maintain the independence of the rump state by making concessions to neighbours, hoping to gain time for a more favorable outcome in the future. He grossly underestimated Hitler's desire to occupy Central Europe and the hunger for revenge from Poland and Hungary, who had been forced to make painful concessions to Czechoslovakia after World War I. He represented Czechoslovakia during the Vienna Arbitration. Due to insufficient preparation, Czechoslovakia had to concede significant parts of Slovak territory to Hungary. When Slovakia declared independence on 14 March 1939, Chvalkovský traveled with President Emil Hácha to Berlin, hoping that further concessions would preserve the independence of Czech lands. Instead, Hitler forced them - in violation of the Munich Agreement - to sign an agreement for the annexation of the country on 15 March 1939. Czechoslovakia ceased to exist.