The three most common local units of government are , , and .

cities, towns, and villages

In the explanation. :)

Explanation:

The most common local units of government are cities, towns, and villages. Other types of political units might include school districts.

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c, this answer is productivity.

ń, wǒ shuō yīngyǔ, dàn wǒ huì shuō qítā yǔyán, rú xībānyá yǔ fǎyǔ yìdàlì yǔ hé pǔtōnghuà, suǒyǐ bùyào pànduàn, dànshì