Which of the following combinations correctly lists the four Allied participants involved in the Inter-Allied Petroleum Conference?

• A. USA, Britain, France, Germany
• B. USA, Britain, France, Italy
• C. USA, Britain, France, Canada
• D. USA, Britain, France, Japan

Answer: (B)

Understanding who participated in the Inter-Allied Petroleum Conference helps you see how the major Allied powers coordinated oil policy after World War I. The four nations involved were the United States, the United Kingdom, France, and Italy. These countries had the strongest oil industries and the most influence on Allied energy strategies at the time, making them the core participants in that conference. Canada and Japan did not take part in this meeting, and Germany was not part of the Allied powers there. So the set that includes USA, Britain, France, and Italy is the correct one.