Early African farmers and the Khoisan

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1.
Exchanging items without using money
2.
Some farmers hired Khoisan people to do this
3.
Sounds that isiZulu and isiXhosa took from the San
4.
Started over issues with cattle and water
5.
The Khoikhoi taught the farmers how to get this.
6.
Sometimes happened between early farming people and the San