Which of the following best describes the “domino theory,” which was used as a justification for us involvement in vietnam?
if the us can defeat one communist country, it can defeat all of them.
if one section of a country is taken over, the rest of the country will also fall.
if an aggressor nation invades one country successfully, it will invade another.
if a country falls to communism, then its neighbors are also likely to do so.

Look at the picture below.

Answer on edge is

If a country falls to Communism, then its neighbors are also likely to do so.

- encouraging nationalism

- returning to conservative political policies

zheng he was a chinese explorer who lead seven great voyages on behalf of the chinese emperor. his seven total voyages were diplomatic, military, and trading ventures, and lasted from 1405 – 1433. however, most historians agree their main purpose was to promote the glory of ming dynasty china.

explanation: