Which European country's national flag is a horizontal tricolour: Red, White and Green?
Flag of Hungary explicitly state anything about the width:length ratio of the flag; but, there is a law from 1957 that is in force stating that seagoing merchant vessels shall hoist the red–white–green tricolour in 2:3 ratio. By a government decree from 2000, the ratio (which is neither defined in the Constitution nor in 1995 or 2000 legislation) of flags used on government building is 1:2. Summarized, this would mean: Flag of Hungary The flag of Hungary (, more commonly ) is a horizontal tricolour of red, white and green. In this exact form, it has been the official flag of Hungary since
Tricolour (flag) Qajar dynasty and the Russian Empire, respectively. The Indian independence movement in 1931 also adopted a tricolour (loan-translated as Hindi, तिरंगा "Tiraṅgā") in the traditional symbolism of "national unification" and republican "self-rule" (Purna Swaraj), adopted as the flag of the Indian Republic in 1947. In 1999, a red, green, and blue tricolour was proposed as the Flag of Mars. The design symbolizes liberty, and also the terraforming of Mars by humanity from a red planet to a green one, and eventually an Earth-like blue one. Tricolour (flag) A tricolour or tricolor is a type of flag or banner design with