Lol omega pog it is a troll and link omega poggy mc poggerson
1854
The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico.
I believe the answer is B. My class and I talked about this in class yesterday.
Answer:
by filtering it out of the ocean