Answer:
Option D, The United States committed millions of troops to the conflict in Vietnam because it feared that surrounding countries would fall to communism if Vietnam did, is the right answer.
Explanation:
A theory that became prominent during the period between the 1950s to the 1980s came to be known as the Domino Theory. According to this theory, in the event that Vietnam is influenced by communism, then the encompassing countries would also follow in a domino effect. This theory was explained by Dwight D. Eisenhower, the then President of the United States, on 7th April 1954, to News Conference. On the basis of this theory, The United States decided to get involved in the Vietnam Conflict.
The fertile soil allowed civilizations to plant crops
The correct answer is B) one block.
<em>In a city, you will drive about one block in the course of 10 to 15 seconds.</em>
That is why you have to take your precautions when driving in a city or downtown. Traffic is high in the rush hours and it could take longer. When driving in the city, you need to remember some guidelines that you learned during your driving lessons such as the space between cars, the speed limit, when to use the horn, and scan the road when you are about to maneuver.