Tricolour (flag) orange-white-blue design of the Prince's Flag ("Prinsenvlag", predecessor of the flags of the Netherlands and Luxembourg), used from 1579 by William I of Orange-Nassau in the Eighty Years' War, establishing the independence of the Dutch Republic from the Spanish Empire. Though not the first tricolour flag, one of the most famous, known as "Le Tricolore", is the blue, white and red (whence also called "Le Bleu-Blanc-Rouge") flag of France adopted in the French Revolution. With the formation of French client republics after 1795, the revolutionary tricolour was exported and adopted more widely in Europe, by the Republic of Alba 1796
Flag of Chad associated with any of the main power rivals within Chad, which had no sense of national identity before independence, and little after independence. The flag of Chad is almost identical to the national flag of Romania, but with a darker tint of blue. When Chad adopted its flag, Romania's flag was different: it used to feature an insignia in the middle of the flag on top of the tricolour; this was added after World War II during the Communist era of the second half of the 20th century. But in 1989 Romania's Communist government was overthrown and the insignia was