Oh sorry Bruce my point about German algriculture was it had problems because it was so labor intensive then what was the case in the US but as you allude to mechanisation proves it's efficency far more so when used on large farms versus small farms. One thing is larger farms I'm sure can get investments/loans to buy expensive machinery far more so then smaller farms and of course a nation with a large automotive industry will probably be able to produce far more & cheaper farm machinery. My point on German mechanisation in algriculture was more about the WW1 era but as I understood it not much changed before WW2 in German algriculture . I wasn't trying to say the US didn't build new factories only that the US didn't go out and do that near as much as they just converted existing industries over to war time production. An example of consumer industry turning to war time production was a certain juke box manufactorer turning out carbines during the war. A good book on the subject is "The Myth of US Mobolisation in WW2" .