The port of Salem was at its prime between the end of the Revolutionary War and the War of 1812. By the time the crisis with Britain was reached in 1775, aggressive sea captains such as Richard Derby and George Crowninshield had accumulated great wealth, primarily due to the cod fish export and molasses import trades. Trading cod brought valuable cargoes of Valencia oranges, Malaga grapes, Bilbao iron, Cadiz salt and Madeira wines back to Salem, while molasses from the West Indies fueled the very profitable rum industry.