After the Dark Age, Athens ended the monarchy and established a council office

True

Explanation:

It is TRUE that after the Dark Age, Athens ended the monarchy and established a council office.

This is evident in that the Greek Dark Ages which lasted between 1100-800 BC witnessed the invasion of Dorian and the end of the Mycenaean civilization.

This led to the end of monarchy or dethronement of various king styles of governance and eventually a council state was established.

sola scriptura

sola fide

sola gratia

solus christus or solo christo

soli deo gloria