The correct answer is A.
The <em>domino theory</em> was a Cold War policy. It was prominent from the 1950s to 1980s. It compared neighboring countries to perfectly aligned rows of domino, meaning that if the first country falls to communism the second follows as well, and then the third, the fourth etc. It is called the <em>domino effect</em> and it was one of the main arguments used to justify American military involvement in the Vietnam War because of Vietnam's proximity to Corea.
Answer:
The Age of Exploration ended in the early 17th century after technological advancements and increased knowledge of the world allowed Europeans to travel easily across the globe by sea.
Explanation:
We all don't feel like using our brain sometimes even, the smart people I totally understand
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General George Marshall contribution during World war II according to the passage is he served as a chief of staff of the US Army. He also helped train US soldiers and airmen in modern warfare in their time. He also manage in the development and procurement of the weapons to helped advance the weaponry of the US Army.