As I know, THE is the definite article and we use it before a noun when the noun is specific or particular and when we use it with a noncount noun, the can be omitted. It is used before names of most countries, before name of continents, cities, streets, lakes, geograhical areas, and before rivers, seas.
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Audrayt is used before names of most countries, before name of continents, cities, streets, lakes, geograhical areas, and before rivers, seas."The" is not used before the names of most countries, not before the names of continents, cities, streets and lakes but it is used before the names of seas and rivers. You can read more
AudrayWe have to use it before geographical names at plural ( states, mountains, points of the compass ), deserts.Is that right?Yes. All that is explained in the link I provided in my previous post.