The event that led to this system was the civil war. People had different views than other people, and there was both rich and poor differences as well. Hope this helps!
The articles gave very little power to the central government and more to the states. Therefore, when the government leaders were trying fix the articles, they really had no power to. That is why, when the leaders had the Constitutional Convention, instead of changing the articles, they had to completely throw out the articles and start over.