The Indian diaspora in Southeast Africa consists of approximately 3 million people of Indian origin. Most of this diaspora in Southeast Africa arrived in the 19th century from British India as indentured labourers, many of them to work on the Kenya–Uganda railway. Others had arrived earlier by sea as traders. Today, the Indian community in Southeast Africa is largely affluent and play leading roles in the region's business sector and dominate the economies of many countries in the region.