Exactly. Of course Germany, the UK and France focused heavily on military designs in the mid 30s, whereas the US aviation industry still produced mostly airliners and mail, liaison and sporting aircraft. That does not change the fact that they were, for most of the 30s, producing significantly more planes than any European power and that their established capacities were larger too. So they were certainly not behind in aircraft production from 1933 to 1941.
The US had the first true modern bomber in the Martin B-10, an export success also. Curtiss, Seversky also had comparable planes to Me 109 / Spitfire, they simply were not as good.
The US had the first true modern bomber in the Martin B-10, an export success also. Curtiss, Seversky also had comparable planes to Me 109 / Spitfire, they simply were not as good.