Final answer:
Authoritarian nations are most often associated with one-party systems where the ruling party maintains control over government and politics.
Explanation:
One-party systems are most often associated with authoritarian nations. Countries like Nazi Germany, the Soviet Union, North Korea, Vietnam, China, Cuba, and Iraq under Saddam Hussein have operated under one-party systems where other parties are banned or unable to compete effectively. This system allows the ruling party to maintain control over the government and political landscape.
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