An African immigrant to the United States is LEAST likely to have emigrated from which of the following countries?

A) Nigeria
B) Ghana
C) Ethiopia
D) Liberia

Liberia has a unique historical connection with the United States, having been founded by freed American and Caribbean slaves through the American Colonization Society in the 19th century. This historical tie, along with its smaller population compared to the other countries listed, makes it less likely as a source of a large number of immigrants to the U.S. compared to Nigeria, Ghana, and Ethiopia, which have larger populations and have seen significant emigration due to various factors including economic opportunities and political reasons.