No, the Articles of Confederation was very well known for having a weak central government. Each state had its own individual power. The need for a stronger Federal government soon became apparent and eventually led to the Constitutional Convention in 1787.
The Sumerians were known as problem solvers and inventors because they wanted peace in the world, and invented a great variety of things.
The colonies formed independent militias to defend themselves.
I want to say D but A is another good option