Some have tried to placate tribes with everything from chain saws to outboard motors.
"I expected clashes with everyone: with the tribes, with the FSA, with anyone," he said.
First, students will research the interactions of particular tribes with the explorers.
They include three Indian tribes with big casinos and, until recently, the Northern Mariana Islands.
ANTHROPOLOGISTS tell of primitive tribes with just six numbers in their counting system.
The Yurok, of Northern California, are one of many tribes with a Web site.
Skirmishes erupt regularly among the tribes, with some tribal armies wielding machine guns and mortars.
We're seeing a huge growth in "piratopia" - undergound, teenage tribes with extremely specific cultural tastes.
The mountain dwarfs were organized in kingdoms or tribes, with their own kings, chieftains, and armies.
Tribes with matrilineal clans, although less numerous, can be found throughout South America.
They developed relatively strong political cohesion for Plateau tribes, with a tribal chief and council.
