Flag of Czech Republic
|Design||Two equal horizontal bands of white (top) and red with a blue isosceles triangle based on the hoist side. |
Upon the dissolution of Czechoslovakia, the Czech Republic kept the Czechoslovak flag while the Slovak Republic adopted its own flag. After the establishment of an independent Czechoslovakia in 1918, the country had been using the red and white flag of Bohemia, identical to the Polish flag. Following calls for a new flag to be adopted by the fledgling state, a committee picked a design by Jaroslav Kursa, an archivist in the Czechoslovak Ministry of the Interior. His design included the red and white horizontal stripes derived from the coat of arms of Bohemia, and added a blue wedge extended halfway along the flag. The flag was banned by the Nazis in 1939, and a horizontal tricolor of white, red, and blue was enforced. The 1920 flag was restored in 1945.
During the 1992 negotiations on the split of Czechoslovakia, a clause forbidding the use of the state symbols of Czechoslovakia by either successor state was inserted into the legislation concerning the dissolution of the federation. The Czech Republic violated this clause, passing legislation overruling the previous agreement and keeping the use of the flag. 
The red and white horizontal stripes derived from the coat of arms of Bohemia.