Flag of Czech Republic

"The national flag of the Czech Republic is the same as the flag of the former Czechoslovakia. Upon the dissolution of Czechoslovakia the Czech Republic kept the Czechoslovak flag while the Slovak Republic adopted its own flag. The first flag of Czechoslovakia was based on the arms, and was white over red. This was identical to the Flag of Poland, so a blue triangle was added at the hoist. The flag was banned by the Nazis in 1939, and a horizontal tricolor of white, red, and blue was enforced. The original flag was restored in 1945. The Czech Republic's use of the old Czechoslovak flag is in direct violation of the constitutional act that explicitly forbids former federal symbols to be used by the two successor states." [Flag of the Czech Republic. Wikipedia]