<Ul> <Li> <P> Snake charmer from Telungu community of Sri Lanka . </P> </Li> <Li> <P> A Scythian horseman from the general area of the Ili river, Pazyryk, c. 300 BCE . </P> </Li> <Li> <P> Yeniche people in the 15th century </P> </Li> <Li> <P> A young Bedouin lighting a camp fire in Wadi Rum, Jordan . </P> </Li> <Li> <P> Kyrgyz nomads in the steppes of the Russian Empire, Uzbekistan, by pioneer color photographer Sergey Prokudin - Gorsky, c. 1910 . </P> </Li> <Li> <P> Tuareg in Mali, 1974 . </P> </Li> <Li> <P> Kyrgyz nomads, 1869 - 1870 . </P> </Li> <Li> <P> Nomads in the Desert (Giulio Rosati). </P> </Li> <Li> <P> Gros Ventre (Atsina) American Indians moving camps with travois for transporting skin lodges and belongings . </P> </Li> <Li> <P> House barge of the Sea Gypsies, Indonesia . 1914 - 1921 </P> </Li> <Li> <P> Photograph of Bedouins (wandering Arabs) of Tunisia, 1899 </P> </Li> <Li> <P> A Banjara Woman of India . </P> </Li> <Li> <P> Indian Gypsies painting by well - known artiste Raja Ravi Varma </P> </Li> </Ul> <Li> <P> Snake charmer from Telungu community of Sri Lanka . </P> </Li> <P> Snake charmer from Telungu community of Sri Lanka . </P> <Li> <P> A Scythian horseman from the general area of the Ili river, Pazyryk, c. 300 BCE . </P> </Li>

Why were pastoral nomads important to the development of civilization