How did John D Rockefeller Run his companies?

What economic system in which decision on production and consumption of goods and services are based on voluntary exchange in market? What are techniques that companies use to influence consumer demands for their goods and services? In theory industries can manufacture and sell poisons bombs and weapons of any type as long as there are consumers to buy them and they operate within a government that permits? Why study elasticity of demand and supply? What is an explosion in the economy's ability to produce? Where do farmers obtain the input that they require? What is the value of one pound sterling to one dollar? How much is 20.00 British Pounds in Euros? The European Union is an outgrowth of a multinational organization founded in 1958 to? What are the key principles and concepts that open-economy macroeconomics deals with? How did closed trademark affect the US economy? What is a consumer in an economic system? Does unienzyme make fair? What are the principal tools of commercial policy in international market? How much is 20 euro cent? Why is defense so important to a country? Is GDP a good measure of a country's economic well-being? What is the difference between Free trade and protectionism? What does surplus reprieve mean? What can you say about the Philippine Government system and its performance?