The symbol would be the little Jesus fish, the symbol is also called ichthys or ichthus.
A method called statistics
I haven't ever done that but I think it might be for Machine made I think it would be Harvesters and for Hand made I think it would be the first airplane I'm not sure what the first airplane is call tbh.
Sorry if I'm wrong... :(
Roosevelt's New Deal programs worked to aid the rural poor, as well as restore soil quality and establish better farming practices.
The Resettlement Administration and Farm Security Administration were agencies created to help poor people in rural areas.
The Civilian Conservation Corps (CCC), the Soil Erosion Service (later known as the Soil Conservation Service), and the Works Progress Administration (WPA) were involved in improving land conditions. Working in conjunction with the National Forestry Service, the CCC and WPA participated in planting millions of trees to act as windbreaks, to prevent the kind of blowing erosion of soil that occurred in the Dust Bowl.