Answer:
Artifacts clarify prehistoric event and give details of culture and life of people at that time.
Explanation:
The artifacts in the form of utensils, structural remains, weapons, accessories, paintings, etc. help researchers to depict about the lifestyle of people in pre historic times.
Some times these artifacts have engravings that can be interpreted by historians to exactly understand the historical era of that time.
Answer: In a group of city-states, each city-state is independent and rules by its own king. No central power controlled all of the city-states. In an empire, consisting of a nation and the city-states and nations it has conquered, one ruler is in control.
Explanation: One has a king in where the other has just a ruler
