They were on separate landmasses, but I'm not really sure this answers the question, you should try just asking google.
<h2>Answer: The Gulf of Mexico
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The Gulf of Mexico is an ocean basin that formed after the collision of the continental plates and the sinking of the seabed during the rupture of the former Pangea mega continent millions of years ago.
This gulf is also the ninth largest water surface in the world, which is contained among the littorals of Mexico, the United States and the island of Cuba. Therefore, this mass of water corresponds to the Atlantic Ocean in the northern part of the American Continent.
The Ming emperors made it their capital in 1421 and it remained China's capital till 1912 when the Manchu Empire fell and SunYat Sen turned China into a republic.
Answer:sand dunes
Explanation:
They are man made barriers, made of sand, to protect the coast from erosion from the incoming waves. They also help to control flooding from storm surge.
