The independence of Greek city states can be often ascribed to the fact that there were poor road connections and that the terrain between the Greek city states was difficult to pass for which reason the different identities developed.
Answer:
Confounding variable
Explanation:
Confounding variable refers to the type of variable that can disrupt the validity of the experiment by giving a certain effect to the variable.
The experiment above was designed to measure mood elevation among the subjects, but the living situation among the subjects are really different among one another and cannot be controlled by the researchers.
Draw some cave art.
here are some cavemen art found in caves in Spain and France.
