The original flag of the Kingdom of Bohemia in the years 1158 - 1918 was a red - white bicolor.
The upper red stripe symbolized field shield coat of arms. Lower white stripe symbolized silver lion with two tails, symbol of the Czech Kingdom. His show is the oldest equestrian seal of 1213. During the Hussites in the 15th century used the Hussites, in the beginning were called Ultraquilsts , flags of the cup. Since 1848 the Czechs begun display the flag upside down, white stripe up to protest against German oppression.
After the end of I. World War in 1918 was declared and recognized internationally Czechoslovak Republic. Czech used at the beginning of white - a red flag and Slovakia white - blue - red flag. On 03.30.1920 the law was adopted new common Czechoslovak flag designed by Jaroslav Kursa The shape formed by the merger of the Czech and Slovak flag. Blue wedge extending to 1/2 the length of the flag colour and shape symbolized Slovakia with mountain peaks.
During II. World War II for the German protectorate was used in the Protectorate of Bohemia and Moravia flag with white - red - blue tricolour. A separate Slovak state used white - blue -Red tricolour.
After the II. World War II Czechoslovakia restore their statehood and using the original common flag.
After the Velvet Revolution on 13.3.1990 Czech National Council approved the bill on state symbols and national flag became the royal white - red bicolour and subsequently Slovak National Council on white - blue - red tricolour. In 1992, the Federal Assembly of Czechoslovakia adopted Law no. 542/1992 on the split of Czechoslovakia in which it was enacted, that the Czech Republic or Slovakia after the split of Czechoslovakia not use national symbols of Czechoslovakia. For the Czech and Slovak Republic There is a problem with the state flag. White - red flag used by Poland and red - white flag used by Monaco. That is why the Czech Republic breached the agreement and adopted for its relaxed Czechoslovak flag. Czech flag with white and red stripe symbolizes the colour of the Czech emblem and blue wedge symbolizes Moravia.