G Why did Jefferson worry about the impact of European conflict on the Mississippi River?
O He believed the river was key to gaining control over Florida and other Spanish colonies.
O He feared the river would be used to establish a border among the British, French, and Spanish colonies.
O He feared the war in Europe would result in the United States losing trading rights at the Port of New Orleans.
O He believed that if the Spanish regained control over the river, the United States would have to enter the war.