1. Geographical advantage: Chicago is located in the midwest of the United States and is an important node of agricultural production and transportation.

2. Financial innovation and technological innovation: The early Chicago Board of Trade used manual marking of prices and handwritten orders for trading, which was inefficient.

3. Legal and institutional guarantee: The Chicago Board of Trade has also undergone many adjustments and reforms in history. The government and regulatory agencies have strengthened the supervision and management of the futures market through the introduction of relevant laws and regulations, ensuring the fairness and legality of transactions and improving the trust and liquidity of the market.