I'm fairly sure that it's the 3rd one because the Spanish wanted to mine gold, while the Caribbean and Central America had a Mediterranean-like climate that made growing sugar very profitable.
Answer:
Ground-penetrating radar
Explanation:
Ground-penetrating radars use radio wave frequencies to find objects underground and send the information back to the archeologists
Cortez still slaughtered the natives and took everything from them.
It has provided new manufacturing jobs in many parts of the world and lowered poverty levels