Hello There!
Great question you asked!
Why did the articles of confederation fail? In the articles of confederation, there was only 1 type of branch which was the legislative branch. There was no executive or judicial branch. Also, congress was not able to trade with any foreign countries so this cause a lot of economic disorganization. Another thing that congress could not do was levy taxes or regulate trade so that caused the issue of them having no money so they could not enforce a military. One last thing is that all the thirteen states at this time had to agree on an amendment in order for the amendment to pass, but that was kind of impossible because these states had rivalry with each-other.