Statistics for occurrence #1 of “Confederate States” in chapter 107, page 324 of Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 2.:

...ongress, lay any duty of tonnage, except on sea-going vessels, for the improvement of its rivers and harbors navigated by the said vessels; but such duties shall not conflict with any treaties of the Confederate States with foreign nations; and any surplus of revenue, thus derived, shall, after making such improvement, be paid into the common treasury; nor shall any State keep troops or ships of war in time of peac...
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