<span> Geographic expansion exposed latent tensions over the morality of slavery and the balance of economic power. It was during the Era of Good Feelings that the political issues arose that would dominate American politics for the next 40 years.</span>
Answer: " that of the expanse of the United States being too big for Republican Government to work"
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Answer: To allow trade and transportation. To provide easy access to food and drink. To grow crops in rich, fertile soil.
Explanation: Rivers have fresh drinking water and the areas near them are fertile and fit for agriculture.