The national government wasn’t able to tax the states leaving them without money, they count draft an army, leaving them with no power, etc. The flaws in the articles can be seen in Shay’s Rebellion when the farmers took over an arsenal and rebelled and the national government had no army to stop them so states had to rely on militias which was not effective.
Social Darwinian extended into theories of race and racism, eugenics, the claimed national superiority of one people over another, and immigration law.
