The cotton gin was an important invention because b) it inadvertently led to the spread of slavery. This was because the demand for cotton grew even more, due to the cotton gin being produced in masses. The cotton gin is "a machine that quickly and easily separates cotton fibers from their seeds, allowing for much greater productivity than manual cotton separation."
Hernando de soto explored north america to find slave trade
Copper coins, back then it wasn't considered a valuable metal
