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

The Second Battle of the Marne caused the Central Powers to collapse. In July 1918, the Allies and Germans clashed at the Second Battle of the Marne. ... With the arrival of 2 million more American troops, the Allied forces began to advance steadily toward Germany. The war would soon be over.

Explanation:

a

explanation:

the church governed the society after the empire fell.   constantine took charge of rome and ended the confusion which had over religion and made christianity as the only religion and that started ruling the roman empire. he also divided the empire into two and fortified the eastern part.   he ruled the eastern part.