the differences between central government political system and federal government political system

Is a kind of centralized state power system for the country in terms of a unified central government, local governments the power to weaken the mark, decentralization is the symmetry. This form originated in China in the Qin Dynasty and peaked in the mid-19th century and the rapid decline. Such a system is usually placed on a par with the absolute monarchy. In addition, the local authority with greater control of several government institutions. The view was expressed that the centralization of power now and has not disappeared, but was hidden under a democratic form of government. In China, this kind of political system is that historians into the present in the feudal society and are part of the Zhuanzhizhengti.
Federalism is a multi-center compound republic, is about self-government, non-centralization of power, the diversity of constitutional arrangements. It has two basic principles of construction of the first to develop a strict procedure to amend the Constitution, the National Government and the various components of the unit split between the state power. National government of national defense, foreign affairs, unification, and other big market with people closely related to the need to focus on the management of the special issues posed with the other units of the people is closely related to general management, respectively, are constituted by the government units.