This is appeared by the development of complex timetables, methods for making noxious plants eatable, and structures, for example, the Pyramids.
Leswi switikomba ekutumbuluxiweni ka tikhalendara leti rharhanganeke, tindlela to sweka swimilana leswingana vuxungu leswaku swudyeka, na ku aka miako yo leha kufana na tiphiramidi.