Norse Governance Compared to the U.S. Democracy

In Iceland, the various chiefs would come to resolve differences at the Althingi, mostly peacefully. You'll see reference to this in The Saga of Burnt Njal. Iceland's parliament still carries the name Althingi.

Before answering the question below, spend some time reviewing the U.S. system of governance and these historical documents:

What are the strengths and weaknesses of these methods of governance? Compare and contrast the U.S. Congress with Iceland's Althingi.