4.2 Kiloyear event - Drought (1 janv. 2252 av. J.-C. – 1 janv. 2150 av. J.-C.)
Description:
 People went from having their ground automatically watered to having to rely on rain and irrigation. 
Ajouté au bande de temps:
Date:
1 janv. 2252 av. J.-C.
1 janv. 2150 av. J.-C.
 ~ 102 years