在稳定方面，中央和中央银行的政府制定了财政政策来影响和控制经济活动，主要有两种方式，一种是税收转移制度和自动反应;另一种是包括可选择的财政政策方法：假设一，成员国在形成欧洲财政政策协调的共同制度体系（“稳定条约”）方面发挥的作用越大，其实施的国家经济和其他适应问题就越少（下载）普通财政对象（Kaaelejrervi 2007）;假设二：财政政策协调制度化程度越高，在欧盟层面，一个成员国财政政策执行中出现的调整问题就越少，越少的成员国就会在政治和经济上尝试改革和重新解释共同规则（Kaaelejrervi，2007） 。
By now, the success which the Eurozone has achieved in the past years has been ignored. Eurozone is sucking onto a big problem about the stability and imbalance of their fiscal policy and economy. So, for Eurozone it is still a long way to be the ‘optimum currency area’. At first, the 12 member states worked well with each other, the GDP expansion was synchronized and which reversed and has been asynchronous from 2008.
The ECB in this environment faced the challenges to pursue a single monetary policy which took into consideration the interest of the members of EMU and helped them to set and organized their government’s debt and fiscal policy. At the end, the EMU members could get a sound fiscal situation in their own country, as well as the whole EMU could have a healthy growth of the economy.
So the problem gets to the ground to compare the monetary union in USA, which is also the heterogeneous monetary union. The fiscal integration should be carried out or should be abolished and then set different small Eurozone, like the North Eurozone and the South Eurozone.
Basic Financial Concepts used in this thesis
In stabilization, the government at the center and central bank set fiscal policy to influence and control the economic activities, by the two basically methods, one is the transfer system and automatic response of taxes; other one includes discretionary fiscal policy methods: Hypothesis one, The greater role a Member state has had in the formation of the common institutional system for European fiscal policy coordination (the Stability Pact), the fewer national economic and other adaption problems it has when implementing (downloading) the common fiscal objects (Kaaelejrervi 2007); Hypothesis Two, The more institutionalized fiscal policy coordination is at the European level, the fewer adjustment problems will occur in fiscal policy implementation in a Member State and the less Member State will try politically and economically to reform and reinterpret the common rules (Kaaelejrervi 2007).