A dispersal of peoples, due to various factors - colonialism, immigration, slavery, persecution, economics, politics. Usually associated with the Jewish people - they've had, perhaps, the longest history of forced and coerced migrations, from subjugation to foreign empires in Old Testament days, to Eastern European pogroms and Hitler. But there are African and Asian diasporas as well, reaching to every continent, making possible, e.g., a Peruvian president named Alberto Fujimori.