Massive amounts of goods passed through Chicago from places in the Mississippi Valley such as St. Louis, Missouri. Grain was stored in Chicago, and people began buying contracts on it. Later, people as far away as New York City began buying contracts by telegraph on the goods that would be stored in Chicago in the future. From this were established the Chicago Board of Trade (CBOT), the Chicago Mercantile Exchange (CME), and the modern systems in use today for futures and commodity trading.