Stalin helped Lenin escape from the authorities in order not to get captured
The answer to this question is option D. National level policies tend to be more fair to a wide variety of citizens and can help.
National policies can be defined as actions or statements that are undertaken at the federal level level of government that can be of benefit to every citizen of a country.
National policies are not geared towards just a group of persons, state or local government. The objectives are for the benefits of all.
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It depends on the situation, but in a definitional sense, irrendentism is more valid.