Who are nomadic tribes?

nomadic tribes means they change there place . they cant live only one place

Nomadic tribes are those people who did not settle down in one place, but kept moving. It can apply to all peoples at one time or another, as the main characteristic of humans is walking. Even pre-humans walked around A LOT! Some peoples in areas with seasonal or marginal food supplies had to keep moving to find enough food. With some peoples it simply became part of their culture to not have permanent settlements and they lived in tents or temporary structures and moved on after a season. There are such tribes among all the varieties of humans. In history it generally refers to the tribes/peoples of central Asia, Turks, Alans, Mongols, however the Indo-Europeans were originally nomadic with the Tocharic peoples moving from Europe to western China before settling down. Many of the tribes in America were not only wanderers from central Asia, once in the Americas many of them lived in tents and had no permanent homes just as they had done when in Asia. The Aborigines of Australia left northeast Africa and remained nomadic in Australia, while one branch of them walked to Japan and became town builders, the Ainu.