Innovation: Tractor Description: a powerful motor-driven vehicle with large, heavy treads, used for pulling farm machinery, other vehicles, etc Importance: makes jobs easier for jobs originally done with oxen
Innovation: Deep Drilling Description: a hole depth greater than ten times the diameter of the hole Importance: Made getting materials under the soil easier
Innovation: Steel Plow Description: used for farming to break up tough soil without soil getting stuck to it Importance: Led to more innovations
