the preamble of the united state constitution state the purpose of government and is based on the belief that

The Preamble is based on the belief that the Constitution is there to "form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, promote the general Welfare.” This is because the founding fathers wanted the government to be successful and the Constitution would be assistance in that process.

Explanation:

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julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

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