Coca cola and wal-mart are able to do business in mexico and china because of availability of have tradable currency.
What is tradable currency.?
Currency can be regarded as the means of exchanging values, it is a way to pay for the value of goods and services.
Therefore, Coca cola and wal-mart are companies in different countries, but doing business is easy for them because there is tradeable currency like dollars.
Learn more about currency at;
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