Trinidad-and-Tobago is an interesting case of a former plantation economy whose largest ethnic group is descended from East Indian indentured labourers rather than African slaves. So by "Trinidadisation", I mean the importation of large numbers of East Indian workers as a cheap alternative to chattel slavery, to the point where their descendants form a plurality of the host country's population by the present day and noticeably influences its culture. Bonus points if you can find a plausible way to do it in the Southern US states.