The invention of irrigation systems & plows (30 janv. 3100 av. J.-C. – 30 janv. 2334 av. J.-C.)
Description:
The Sumerians needed a stable food supply so they invented plows and irrigation systems. Irrigation systems are very important and are used many years later as well. Irrigation systems made sure that there was always a steady supply of water. Plows also were a very very important invention that prepared the soil.Ajouté au bande de temps:
Date:
30 janv. 3100 av. J.-C.
30 janv. 2334 av. J.-C.
~ 766 years