Bangladesh is an important tea-producing country. It is the 10th largest tea producer in the world. Its tea industry dates back to British rule, when the East India Company initiated the tea trade in the hills of the Sylhet region. In addition to that, tea cultivation was introduced to Greater Chittagong in 1840. Today, the country has 166 commercial tea estates, including many of the world's largest working plantations. The industry accounts for 3% of , and employs more than 4 million people.