The most common place for a bill to die is in the Presidents office. Once he vetoes it, there is a higher chance that legislators would change their mind and vote against the bill later
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Answer:
The large political upheaval (Articles of Confederation to Constitutional Convention and United States Constitution, Bill of Rights)
Explanation:
the answer to your question is a) they had advanced planning and developed effective military methods.
The civil war was caused by more than disagreement there was slavery going on and racism and so-on