Lange model

The Lange Model is a way of looking at how countries and their people interact with each other in different parts of the world. It works by seeing the world as a system of countries that act and interact with each other. Each country has its own set of policies and laws, and when they interact with each other, these policies and laws may affect each other. For example, if one country has a policy of allowing free trade, then the other country may benefit from that free trade, because it can buy and sell goods at lower prices. So, the Lange Model is about how different countries interact with each other, and how their policies and laws affect each other.