Jeans are trousers typically made from denim or dungaree cloth. Often the term "jeans" refers to a particular style of pants, called "blue jeans," which were invented byJacob Davis in 1871 and patented by Davis and Levi Strauss on 20 May 1873. Starting in the 1950s, jeans, originally designed for cowboys and miners, became popular among teenagers. Jeans come in various fits, including skinny, tapered, slim, straight, boot cut, narrow bottom, low waist, and are now a very popular article of casual dress around the world. They come in many styles and colors. However, blue jeans are particularly identified with US culture, especially the United States Old on the trade of jean fabric shows that it emerged in the cities of Genoa, Italy, and Nimes, France. Gênes, the French word for Genoa, may be the origin of the word "jeans". In Nimes, weavers tried to reproduce jean but instead developed a similar twill fabric that became known as denim, from de Nimes, meaning "from Nimes". Genoa’s jean was a fustian textile of “medium quality and of reasonable cost”, very similar to cotton corduroy for which Genoa was famous, and was "used for work clothes in general". Nimes’s “denim” was coarser, considered higher quality and was used "for over garments such as smocks or overalls".[2] Nearly all Indigo, needed for dying, came from indigo bush plantations in India till the late 19th century. It was replaced by indigo synthesis method developed in Germany.