In read some histories on WW1 I read where a lot of stuff we used was borrowed from the French. We really didn’t gear up until mid-1918 and by then Germany was on the ropes so to speak even though they had a few offenses that caused the Allies some worry.
The US economic output surpassed that of Britain roughly in 1910. Militarily we weren’t ready for WW1 with the exception of our Navy. So I would say we had the complete set by 1920. The US had a very strong say at Versaille, 1919.
Dow sold gun powder to Germany and once we began to enter WWI, US companies quit selling gunpowder. The nature of trench warfare dictated mass quantites of gun powder were needed - Germany literally ran out of gun powder.
Canadians broke the German backs in WW1. The USA was a bit late to that game, but a welcome addition all the same.
I would agree with the article that the Spanish-American war was the rise of the US as a global power.