WW2 USA alone against the AXIS - Who would have won? - Video

What would have happened if the United States stood alone against the full might of the Axis powers—Germany, Italy, and Japan.
No British allies. No Soviet counteroffensive. No global coalition. Just America.
Let's suppose that after Dunkerque, Britain makes peace with Axis. Then after Pearl Harbour, Germany and Italy declare war on USA, as in our timeline.
Who would have won?
What would have happened if the U.S. had taken on the Axis powers alone.
military strength, industrial capacity, weapons, battles, war scenarios. And the nukes?
Could the U.S. have survived—or even triumphed?