What structural aspect of U. S. federalism could be considered parallel

Federalism divides power between multiple vertical layers or levels of government—national, state, county, parish, local, special district–allowing for multiple access points for citizens. The governments, by design at the national and state levels, check and balance one another.

Explanation:

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i think a judge or jury, as they preside over the court and is the central figure in a trial.

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sorry i cant