Which of the non-european countries had the greatest impact on the war effort? explain?

America

Explanation:

America was the non- European country to have an impact on the war. America is found in the North American continent.

America had the greatest effect on the war because it supplied its allies with enough soldiers(manpower) and equipments. This support by America made them to be able to defeat Germany in the war.

we need the chart or check box

the speech revealed that eastern european countries were no threat to their neighbors, which led to the creation of the truman doctrine i think this might be correct.