Differences between the Articles of Confederation and the Constitution? PLEASE HELP!?

The Articles of Confederation provided a weak central government which proved to be unsuccessful. The federal government had no power to tax. The states had too much power. The Constitution provided a stronger central government wich ultimatley made the government more powerful. Creating the three branches of government (judicial- Supreme Court; executive- presidrent; legislative- congress) allowed for a balance of power so that no one branch would become too powerful (like King George had been to the colonies).