The main policies of EU's social and economic development are as follows:

With the in-depth development of European integration, the EU has gradually established and improved a series of * * * policies, among which the main ones are customs union, * * * agricultural policy, * * * fishery policy, * * * regional policy, * * * social policy and * * * monetary policy. It reflects the European pattern that has been United in the economic, political, security and defense fields in the process of EU integration.

EU policies reflect the coordination and unity of social and economic development. The process of EU economic integration starts from the customs union, and finally moves towards a comprehensive economic and monetary union by implementing the * * * common market and unifying the big market. On July 1st, 1968, the European Union abolished all tariffs among its member countries, established a unified customs tariff, initially established a customs union, and implemented a * * * tariff policy for products from third countries outside the region, so as to promote intra-regional trade and economic development.

*** The same agricultural policy is the first * * * same policy implemented in the EU. Its basic goal is to improve agricultural labor productivity, ensure the "fair" income of agricultural personnel, stabilize the agricultural product market, maintain the reasonable sales price of agricultural products and ensure the supply of agricultural products.

its main content is to establish agricultural funds, unify the market and price of agricultural products, subsidize the export of agricultural products, and set up trade barriers such as differential tax and quota that are adjusted with the change of market supply and demand externally, so as to avoid the competition of cheap agricultural products from the outside. The objectives of regional policies are "promoting the coordinated development of the EU as a whole", "strengthening its economic and social integration" and "reducing the development differences between different regions and eliminating the backwardness of the least developed regions or islands and rural areas".

EU social policy and regional policy complement each other, and both aim to promote the coordinated development of EU economy and society. In addition to the above-mentioned policies, the EU has gradually stepped up its actions in employment, transportation, public health, environmental protection, scientific research, justice and internal affairs in recent years, which complement the national measures taken by member States in these fields.