Which city below was not one of the songhay empire's major ones? gao timbuktu algiers jenne

If one thinks illegal immigrants should become american citizens, should they become american citizens automatically or should there be a waiting period?

What does the quote describe? “the closeness of the place, and the heat of the climate, added to the number in the ship, which was so crowded that each had scarcely room to turn himself, almost suffocated us….the shrieks of the women, and the groans of the dying, rendered the whole a scene of horror almost inconceivable.”

Why do many scientists suppose the land bridge theory of migration?