The Hakka, unlike the Hokkien and the Teochew, originate from the mountainous inland regions of Guangdong and do not have a maritime culture. Owing to the unproductive terrain of their home region, the Hakka emigrated out of economic necessity in several waves from 1850 to 1930 and were the poorest of the Chinese immigrant groups. Although they initially populated the mining centers of western Borneo and Bangka Island, Hakkas became attracted to the rapid growth of Batavia and West Java in the late 19th century.