Final answer:
The Greek assembly was composed of citizens, signifying an early form of democracy where the populace had a role in political decision-making.
Step-by-step explanation:
A Greek assembly was made up of a group of c. citizens. This form of assembly became a key element of governance in various Greek city-states, particularly during the Archaic and Classical periods. Such assemblies were often held in the agora, which was both a marketplace and a public square, where citizens of the polis (city-state) could gather to discuss and make decisions on matters of public importance.
These assemblies evolved as a means to involve citizens in the political process, creating an early form of participatory government known as democracy.
In contrast, oligarchs, the king's advisors, and tyrants represent different forms of governance. Oligarchs were the powerful few in an oligarchy, a king's advisors typically referred to a monarchical system where the king would make decisions based on their counsel, and tyrants were leaders who seized power without any formal legal right, often with popular support to prevent civil strife.
Nonetheless, the term 'tyrant' did not initially signify a cruel or unjust ruler. Rather, it referred to a strong leader who stepped in to solve political crises, balancing the interests of different social classes.