Which issue debated at the constitutional convention contributed most to the conflict between northern nd southern states in the years leading up to civil war

How members of the lower house of Congress should be elected. -What should be done about the slave trade. -How the power of the executive branch be structured. -How the Constitution should be considered for ratification. -How the states should be represented in national legislature. -the national governments role in issuing paper money. -division of national and state powers. -extent of veto power. -which governmental body should have the power to declare war. -if slaves should be counted in determining representation in national legislature

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