A . I think it makes more since but I'm not sure
B. the transfer of peoples, diseases, plants, and animals between the New and Old Worlds
<span>The Columbian Exchange involves the transatlantic exchange of plants, animals, and diseases that occurred after the first European contact with the Americas.</span>
Ellis Island is a place where most European immigrants were processed when coming into New York Harbor. Here, they had to prove that they were healthy, had money, a skill or someone to sponsor them and provide for them. While first and second class passengers were inspected on the ship, all steerage passengers came through Ellis Island. Steergate passangers were considered to be less wealthy, with no one to vouch for them, possibly criminals or with cloudy past.
