Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The Reciprocity Treaty between the British North American Provinces (Canada) and the United States was ratified in February 1855 and terminated in March 1866. It provided for free trade in all natural products, free access for United States fisheries to the Atlantic coastal waters of British North America, and access to the St. Lawrence River for American vessels under the same tolls as native vessels.