 It is estimated that up to 20 million Indians have emigrated from their homeland, making it the largest diaspora in modern times.Thus, the Immigration Depot is considered to be the site where the modern, large-scale indentured labour diaspora began—the system didn't only sustain the plantation economies of the British Empire, but also resulted in the transplantation of cultures and shaping of the national identity of former colonies.Countries from the Caribbean to southern Africa to the Pacific currently have substantial Indian populations.