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
Sayama tea of tea was interrupted by war during the Sengoku period. Widespread tea growing restarted in the Mid-Edo period. In 1802, a technique called , first steaming and then roasting on the surface of washi was invented by , , and , based on the Uji roasting technique, which was deemed the best method in Japan at that time. This led to the revival of tea production in the region. In 1819 (Bunsei 2), tea leaves produced in this method started to be shipped to Edo in large amounts, receiving good reputations. After the Meiji Restoration, tea became one of the