Indian tea culture the Yandaboo Treaty. In 1837, the first English tea garden was established at Chabua in Upper Assam; in 1840, the Assam Tea Company began the commercial production of tea in the region, run by indentured servitude of the local inhabitants. Beginning in the 1850s, the tea industry rapidly expanded, consuming vast tracts of land for tea plantations. By the start of the 20th century, Assam became the leading tea producing region in the world. But despite the discovery of the indigenous "Camellia sinensis" plant, the tea industry in India began with 42,000 seedlings germinated from a consignment of 80,000 seeds
Brazilian tea culture industry, was heavily dependent on slave labor to work on the plantations. When slavery was abolished in 1888, the tea trade collapsed. In the 1920s, the tea industry was revived by Japanese immigrants, who introduced tea seeds from Sri Lanka and India. Prior to this time, only Chinese tea varieties had been grown in Brazil. Brazil's largest tea-producing region is near Registro, a coastal city near São Paulo. Registro is in the Brazilian Highlands and forms a terrain of low rolling hills that are ideal for mechanized tea production. The growing season in Brazil is from September to April; the