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helped shape human society and entrepreneurship. The invention of money around 650 and 600 B.C. The Fertile Crescent, Sumeria, and the city of Uruk are examples of these cities. As specialization improved and trade volume increased, communities transformed from small holdings to towns and cities with thousands of people. People began specializing in a different economic niche, and goods or services they created were exchanged for other goods or services. when we started domesticating animals and plants, and building communities. This form of trading would continue until the first Agricultural Revolution in 10000 B.C.

New Guinea, where our hunter-gatherer ancestors traded obsidian for essential and non-essential goods.