What happened in 1914 which European powers were American businessmen ready to trade with?

In 1914, the outbreak of World War I significantly altered global trade dynamics. Prior to the war, American businessmen were primarily ready to trade with the major European powers, including Britain, France, and Germany. However, as the war progressed, the U.S. shifted its focus to trade with the Allies, particularly Britain and France, as they sought supplies and materials to support their war efforts. This shift marked the beginning of a substantial increase in American exports to these nations, setting the stage for the U.S. economic boom during the war.