A flood is when a bunch of water comes rushing into a place and everything is almost completely covered in water. A landslide is much the same except it is with land-not water.
<u>B - A theory that stated if Vietnam fell to communism the rest of the region would soon follow.</u>
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People were afraid that once Vietnam fell into communism that surrounded places would soon follow. Vietnam would be the first domino to fall and hit the rest of the region causes more communism.
