CHAPTER V.THE AGRICULTURAL REVOLUTION.
The Census of 1920 shows that hardly thirty per cent of the people are today engaged in agriculture, the basic industry of the United States, as compared with perhaps ninety per cent when the nation began.

Yet American farmers, though constantly diminishing in proportion to the whole population, have always been, and still are, able to feed themselves and all their fellow Americans and a large part of the outside world as well.

They bring forth also not merely foodstuffs, but vast quantities of raw material for manufacture, such as cotton, wool, and hides.

This immense productivity is due to the use of farm machinery on a scale seen nowhere else in the world.

There is still, and always will be, a good deal of hard labor on the farm.