Final answer:
A global economy is when countries are economically dependent on one another due to globalization, involving integrated trade and cooperative resource distribution.
Step-by-step explanation:
When countries become dependent on each other economically, it is known as a global economy. This concept is a result of globalization, which is the integration of governments, cultures, and financial markets through international trade into a single world market. A global economy sees nations reliant on one another for goods and services, often making political and resource-based decisions that impact multiple countries. Factors like improved transportation, communication, and decreased trade costs have increased interdependence among nations. Multinational corporations and countries engage in this form of economy, benefiting from specialization and expanded markets while also facing global challenges like climate change and economic crises collectively.