The correct answer is The Articles of Confederation didn't give the federal government enough power to be effective.
The Articles of Confederation was America's first attempt at developing a new constitution without the British controlling them. The goal of this new constitution was to create a political system completely different than the one the Americans experience under the rule of Britiain.
The fear of a strong central (federal) government was one of the most influential factors in the development of the Articles of Confederation. This is why the Articles of Confederation gave state governments significant power and gave the federal government almost no power. Eventually, this constitution would be replaced with the US Constitution.