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.
History of Czechoslovakia
By 1992, Slovak calls for greater autonomy effectively blocked the daily functioning of the federal government. In the election of June 1992, Klaus's Civic Democratic Party won handily in the Czech lands on a platform of economic reform. Vladimír Mečiar's Movement for a Democratic Slovakia emerged as the leading party in Slovakia, basing its appeal on fairness to Slovak demands for autonomy. Federalists, like Havel, were unable to contain the trend toward the split. In July 1992, President Havel resigned. In the latter half of 1992, Klaus and Mečiar hammered out an agreement that the two republics would go their separate ways by the end of the year.