Arch vs Setif

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An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it. Arches may be synonymous with vaults, but a vault may be distinguished as a continuous arch forming a roof.

Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture, and their systematic use started with the ancient Romans, who were the first to apply the technique to a wide range of structures.

Source: Wikipedia

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Sétif (Arabic: سطيف‎, Kabyle: Sṭif) is an Algerian city and the capital of the Sétif Province. It is one of the most important cities of eastern Algeria and the country as a whole, since it is considered the trade capital of the country. It is an inner city, situated in the eastern side of Algeria, at 270 kilometers east of Algiers, at 131 km west of Constantine, in the Hautes Plaines region south of Kabylie.

The city is at 1,100 meters of altitude. The city was part of the ancient Berber kingdom of Numidia, the capital of Mauretania Sitifensis under the rule of the Roman Empire before becoming Muslim during the Muslim conquest of the Maghreb. It is considered as the starting point of the May 8th, 1945 protests, which was a crucial factor to the start of the Algerian War.

Source: Wikipedia