Flag of Schleswig-Holstein flag on 18 January 1957. The plain tricolour is the state's civil flag. Government authorities use the state flag ("Landesdienstflagge"), where the flag is defaced by the state coat of arms. The tricolour was previously used for the Prussian province of Schleswig-Holstein (1868-1946). It is almost identical to the flags of the Kingdom of Yugoslavia, Serbia and Montenegro (FR Yugoslavia), as well as the flag of the Netherlands inverted. Flag of Schleswig-Holstein The flag of Schleswig-Holstein is a horizontal tricolour of blue, white, and red. Schleswig-Holstein is one of the 16 states of Germany, comprising most of the historical duchy
Flag of Zanzibar yellow cloves was added to the flag. On 12 January 1964, John Okello overthrew the Sultan of Zanzibar and adopted a black-yellow-blue tricolour as the flag of the People's Republic of Zanzibar and Pemba. On 29 January, the country's flag was changed to a blue-black-green tricolour with a thin white stripe at the hoist. This design, which was based on the flag of the Afro-Shirazi Party, was the longest-lived of the post-independence flags and eventually formed the basis for the current flag. On 26 April 1964, Zanzibar united with Tanganyika to form the new country of Tanzania and Zanzibar's old