Why do you think the United States would not want communist governments to take power in other countries?

The influence will keep getting larger.

Explanation:

Communist government and democracy has inherent principles that completely contradict one another.

The communist government typically centralized all the power /resources in the country to the control of the government. Democracy on the other hand, give the people with the power to influence the government and have ownerships of private poverty.

When communist government take power in other countries, they're more likely to try to spread the communistic influence to other smaller/weaker countries. Since a lot of US economy relied on free trade with these countries, US government made a lot of efforts to prevent it from happening.

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