The Columbian Exchange or Grand Exchange, was the widespread, at the time, communicable diseases were a byproduct of the exchange.Slaves were a popular trade it em between Africa, Europe, and the American.
56 People
Source: https://www.reference.com/history/many-men-signed-declaration-independence-6fce64817b4b9c01
Answer:
they were used to power ships and train
He thought the colony needed to attract many new settlers.