Cardinal Robert Bellarmine was in charge of commerce with
difficult issues linked to the Church’s power and beliefs during the Galileo disagreement.
He wrote the following letter to Paolo Antonio Foscarini in response to
Foscarini’s book defending Galileo.
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The key waterways in the south during the civil war were: Mississippi,Ohio and Tennessee rivers
Both side aware that controlling these rivers would cut down oppositions food and weaponry supplies along with limiting the opposition's ability to mobilize. The union army managed to leverage on this situation better than the Confederates, leading to the union's victory during the civil war.