How did the spanish war start?

On February 15, 1898, a mysterious explosion sank the battleship USS Maine in Havana Harbor, triggering a war between the United States and Spain. The Maine had come to Cuba to protect American citizens while Cuban revolutionaries were fighting to win independence from Spain.

Explanation:

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loess contribute to the flooding of rivers by providing the silt that is washed into rivers and constantly raises the bed of the rivers. this elevation above the surrounding flood plains and dams allow the river to overwhelm the dams and flood thousand of square miles of neighboring flood plains.