<u>B - A theory that stated if Vietnam fell to communism the rest of the region would soon follow.</u>
<u></u>
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.
Mercury, Venus, earth , Mars, Jupiter, Saturn, Uranus, Neptune, pluto
Answer:
D
Explanation:
Population of North America: 579 million
Population of South America: 422.5 million
Combined = 1.1 billion
