12 juill. 1890 - 1890
Description:
The combine harvester, which combined the cutting and threshing of grain crops, came into widespread use in California. It gradually spread to other western states. The combine reduced the amount of labor needed to harvest one hectare of wheat from 37 to 6.25 man-hours.Ajouté au bande de temps:
Date:
12 juill. 1890
Maintenaint
~ Il y a 133 ans
