At the beginning of the nineteenth century, what was the primary means for transporting goods?

battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

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this is a good question! i'll do some research and come back when i have the answer!