Answer :

The Constitution replaced the Articles of Confederation because it held tru to the ideas of federalism--that the main power of the nation should come from a strong central government, not the individual states.
The advantage of Federalism is that national issues are handled by the National Government: For example 1. National Currency--money 2. Interstate Trade 3. Armed forces 4. Foreign Relations--treaties. While local issues are handled by local government. For example: Local is called State--the 50 states. 1. Education 3. Driving laws. 2. Marriage/divorce laws 4. Alcohol laws. It allows each level of government to operate where it is believed that the people's best interests will be served. Hope that helps.