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Based on the 2019 Index of Economic Freedom, Hong Kong, with its extremely low tax rates, minimal regulations on businesses and highly capitalist system of economics, ranks as 90.2.% economically free, which is the highest in the world. Singapore ranks second and is 89.4% free. The country imposes no tariffs and there are few restrictions on investments. Singapore also features strong private property rights.

New Zealand, which ranks third at 89.4% free, also has very low tariffs and strong private property rights. The government provides businesses with lots of flexibility and does not constrict them with overly complicated regulations or licensing procedures. LINK

If you look at ancient tribal cultures (pre-agrarian) I think it would be fair to call them 100% free-markets.