Amassing a fortune in fur trading, opium and Manhattan real estate, John Jacob Astor (1763 1848) was the first multimillionaire in the United States. A young dairy salesman in Germany, he arrived to New York in 1784, trading with natives and selling furs in the city. In 1800 he established commercial ties with China. The 1810-12 Astor Expedition established Fort Astoria, the first American trade post on the west coast. His American Fur Company and its subsidiaries eventually controlled the Pacific and Great Lakes fur markets. Astor later withdrew from trade and bought large parcels of undeveloped land on Manhattan. In his later years he supported John James Audubon and Edgar Allan Poe, and created the first trust in America; his heirs financed the New York Public Library.