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Answer:
The Roman Republic was the era of classical Roman civilization, led by the Roman people, beginning with the overthrow of the Roman Kingdom, traditionally dated to 509 BC, and ending in 27 BC with the establishment of the Roman Empire.
Explanation:
Increase in immigration, trade, and commerce travel.
The correct answer is tax collection, law enforcement, and trade between states.
All of these problems were a result of the weaknesses in the Articles of Confederation. The Articles of Confederation was America's first constitution. Scared of having a strong central government, the Americans created a system in which state governments had almost all the power. All of the problems listed represent actions that the central (aka federal) government struggled with under the Articles of Confederation. In order to be a successful country, this needed to be changed.