premise: The Romani people are widespread.
hypothesis: Romani people . They are a dispersed people , but their most concentrated populations are located in Europe , especially Central , Eastern and Southern Europe ( including Turkey , Spain and Southern France ) . There are an estimated one million Roma in the United States ; and 800,000 in Brazil , most of whose ancestors emigrated in the nineteenth century from eastern Europe . The total number of Romani people is at least twice as large ( several times as large according to high estimates ) .