Lol, that is a wise person.
Answer:
Livestock and trade.
Explanation:
Livestalk herding of camels, sheep, and goats, are common.
Along with trading other things.
<em>Hopefully this is correct. Have a great day.</em>
I think it refers to worldwide mutual dependence between nations/countries as we depend on each other for the key things like food etc. on a worldwide level.