What did the aboriginal people have to trade?

* Food: Aboriginal people were skilled hunters and gatherers, and they had access to a wide variety of foods, including kangaroo, emu, fish, shellfish, and fruits.

* Weapons and tools: Aboriginal people made a variety of weapons and tools from stone, wood, and bone, including spears, boomerangs, axes, and knives.

* Art: Aboriginal people are renowned for their art, which includes paintings, carvings, and sculptures.

* Knowledge: Aboriginal people had a deep knowledge of the land and its resources, and they were skilled in navigation, tracking, and survival.