There are many tribal groups in Africa. You can't even count them, because there are yet to be discovered tribes in Africa and Nigeria alone has over 400 tribes and about 521 languages. so, I don't think there will be an exact number of the tribes in Africa.
There is no single tribal name for the indigenous people of Australia, as there were around 600 different tribal groups in Australia prior to European settlement. As a group, the proper name for the indigenous people is Aboriginal and Torres Strait Islanders.
The forest passed by the colonial rule had an considerable effect on tribal people they were not allowed to practise jhum cultivation they were not allowed to move freely they were not allowed to collect fruits and vegetables