Igbo Americans, or Americans of Igbo ancestry, (Igbo: Ṇ́dị́ Ígbò n'Emerịkà) are residents of the United States who identify as having Igbo ancestry from modern day Nigeria. There are primarily two classes of people with Igbo ancestry in the United States, those whose ancestors were taken from Igboland as a result of the transatlantic slave trade before the 20th century and those who immigrated from the 20th century onwards partly as a result of the Nigerian Civil War in the late 1960s and economic instability in Nigeria. Igbo people prior to the American Civil War were brought to the United States by force from their hinterland homes on the Bight of Biafra and shipped by Europeans to North America between the 17th and 19th centuries.