Economic integration aims to increase economic efficiency by eliminating trade barriers and allowing for the free flow of goods, services, and capital.

Economic and monetary union is not a type of economic integration, but rather a stage in the process of economic integration where countries adopt a common currency and monetary policy.

A free trade area allows for the free flow of goods and services between member countries, leading to increased competition and lower consumer prices.

In a customs union, member countries agree to a common external tariff, which is a tax on imports from non-member countries.

The main feature of a common market is the free movement of goods and services between member countries.

Economic integration can lead to increased economic growth, reduced unemployment, and improved income distribution, but it does not necessarily lead to increased environmental degradation.

The main challenge of economic integration is overcoming political barriers, such as the reluctance of countries to give up their economic sovereignty.

The European Union is an example of a successful economic integration, as it has led to increased economic growth, reduced unemployment, and improved income distribution among its member countries.

The future of economic integration is likely to be characterized by increased regionalism, as countries seek to form closer economic ties with their neighbors.

Economic integration can potentially lead to increased inequality, loss of cultural identity, and environmental degradation.