The United States thought that the Soviet Union would spread communism by turning other countries communist.
Explanation:
The concept of the Domino Effect is that if one domino falls, the rest of them will too. If communism spreads to let's say Poland, it will spread to Germany and then the rest of Europe, eventually reaching the entire world.
Some reasons for limiting authority would be "B- to protect individual rights" and "C- to prevent the misuse of <span>power" since option A can be done without limiting power. </span>