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.
Hungary–Slovakia relations
Hungary and Slovakia are two neighboring countries in Central Europe. There are two major periods of official foreign relations between them in contemporary history. The first period included relations between the Kingdom of Hungary and the first Slovak Republic in 1939-1945. The second period has started in 1993, when the countries again established diplomatic relations, the year when Slovakia became independent of Czechoslovakia. Hungary has an embassy in Bratislava and a general consulate in Košice ("Hungarian": Kassa), and Slovakia has an embassy in Budapest and a general consulate in Békéscsaba.