Syria
The flag is based on the Arab Liberation Flag, which had four colors – black, green, white and red – representing four major dynasties of Arab history: Abbasids, Faṭimids, Umayyads, and Hashimites.
transportation
Switzerland
The flag of Switzerland displays a white cross in the center of a square red field. The white cross is known as the Swiss cross. Its arms are equilateral, and their ratio of length to width is 7:6. The size of the cross in relation to the field was set in 2017 as 5:8.
Suriname
The flag of Suriname is composed of five horizontal bands of green (top, double width), white, red (quadruple width), white, and green (double width) with a large, yellow, five-pointed star in the center. The color red represents progress, white represents freedom and justice and the green represents the fertility of the land. The yellow star represents unity and a golden future
Sudan
Red, white, black and green are called the pan-Arab colours and have been historically linked to the Arab people and Islamic religion for centuries. The colours stand for Arab unity and independence. The red stripe represents Sudan’s struggle for independence and many other struggles, and the sacrifices of the country’s martyrs. The white represents the people, light and optimism. It also represents the White Flag League which was a nationalist group that rose up against colonial rule in 1924. The black represents Sudan; in Arabic, ‘Sudan,’ means ‘land of the black people.’ It also represents the black flag of nationalists who fought colonial rule during the Mahdist Revolution, late in 19th century. Green represents Islam, agriculture and the prosperity of the land.[
Sri Lanka
The flag of Sri Lanka, also called the Sinha Flag or Lion Flag, consists of a golden lion holding a kastane sword in its right fore-paw in a maroon background with four gold bo leaves, one in each corner. This is bordered by gold, and to its left are two vertical stripes of equal size in green and orange, with the orange stripe closest to the lion. The lion and the maroon background represent the Sinhalese, while the saffron border and four bo leaves represent concepts of mettā, karuṇā, muditā and upekshā respectively. The stripes represent the country’s two largest minorities, with the orange representing the Tamils living in Sri Lanka – both the native Sri Lankan Tamils and the Indian Tamils of Sri Lanka – and the green representing the Muslims of Sri Lanka.
Ceuta
The flag of Ceuta is the flag of the Spanish city of Ceuta, consisting of a black and white gyronny with a central escutcheon displaying the municipal coat of arms.
The gyronny is identical to that of the flag of Lisbon, to commemorate the conquest of the city by the Portuguese in 1415. The city was a part of the Portuguese Empire until 1640, after which it decided to remain with Spain. Thus the coat of arms of the city is nearly identical to that of the Kingdom of Portugal, showing the seven castles over the red bordure and the five escutcheons with silver roundels.
Catalonia
The Senyera is a vexillological symbol based on the coat of arms of the Crown of Aragon, which consists of four red stripes on a yellow field. This coat of arms, often called bars of Aragon, or simply “the four bars”, historically represented the King of the Crown of Aragon.
The senyera pattern is currently in the flag of four Spanish autonomous communities (Catalonia, Aragon, the Balearic Isles, the Valencian Community), and is the flag of the historically Catalan-speaking city of Alghero in Sardinia. It is also used on the coat of arms of Spain, the coat of arms of Pyrénées-Orientales and of Provence-Alpes-Côte d’Azur, the flag of Roussillon, Capcir, Vallespir and Provence in France, one quarter of the coat of arms of Andorra, and on the local flags of many municipalities belonging to these territories. The Senyera (sometimes together with the flag of Andorra) is also used more informally to represent the Catalan language.
Canary Islands
The tricolor flag has its origins in the Canarias Libre movement of the 1960s. It was designed by Carmen Sarmiento and her sons Arturo and Jesus Cantero Sarmiento, and first displayed (in paper form) on 8 September 1961. It combined the blue and white colors of the Province of Santa Cruz de Tenerife (Province of Canary Islands) with the blue and yellow colors of the Province of Las Palmas.