African-American diaspora
The African-American diaspora refers to communities of people outside of the United States who are descended from people of African descent who were enslaved in the United States or the prior British colonies along the east coast of North America . 
<triplet> African-American diaspora <subj> African descent <obj> has part <triplet> United States <subj> African descent <obj> ethnic group <triplet> enslaved in the United States <subj> United States <obj> country <triplet> east coast of North America <subj> United States <obj> country