History shows that countries used to be concerned only with regulating their own economies. As times have changed, goods, people, and money now move more freely throughout the world. These changes reflect the idea of .

A global economy

Explanation:

A global economy is the term which is refers to the interlink of various types of economical activity across the world and the global economy basically managing the trading system that is known as the globalization.

 The main role of the global economy is that it helps in operating the various types of activities in the financial market and also managing the productivity and growth of the economy.

 According to the given question, the changes in the economics and regulating the various types of function in the country is basically reflecting the idea of a global economy.  

  Therefore, global economy is the correct answer.