Based on the graph why did the allies appear to have an advantage in the war?

Without seeing the specific graph, I can infer that the Allies likely appeared to have an advantage in the war due to factors such as greater military resources, higher troop numbers, or superior industrial production rates. Additionally, the graph may show increased strategic victories or territory gained by the Allies over time, reinforcing their position. Such indicators typically reflect a stronger overall capacity to sustain and win in the conflict.