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Salt | |
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Population | 0 |
Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater, where it is the main mineral constituent. The open ocean has about 35 grams (1.2 oz) of solids per liter of sea water, a salinity of 3.5%.
Salt is essential for life in general, and saltiness is one of the basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation.
Some of the earliest evidence of salt processing dates to around 6,000 BC, when people living in the area of present-day Romania boiled spring water to extract salts; a salt-works in China dates to approximately the same period. Salt was also prized by the ancient Hebrews, the Greeks, the Romans, the Byzantines, the Hittites, Egyptians, and the Indians. Salt became an important article of trade and was transported by boat across the Mediterranean Sea, along specially built salt roads, and across the Sahara on camel caravans. The scarcity and universal need for salt have led nations to go to war over it and use it to raise tax revenues. Salt is used in religious ceremonies and has other cultural and traditional significance.
Samara | |
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Population | 1170910 |
Samara (Russian: Сама́ра, IPA: [sɐˈmarə]), known from 1935 to 1991 as Kuybyshev (Куйбышев; IPA: [ˈkujbɨʂɨf]), is the largest city and administrative centre of Samara Oblast. The city is located at the confluence of the Volga and the Samara rivers, with a population of over 1.1 million residents, up to 3 million residents in the urban agglomeration. The city covers an area of 541.382 square kilometers (209.029 sq mi), and is the eighth-largest city in Russia, the third-most populous city on the Volga, as well as the Volga Federal District.
Formerly a closed city, Samara is now a large and important social, political, economic, industrial, and cultural centre in Russia and hosted the European Union—Russia Summit in May 2007.
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