Oceanic crust is denser than continental crust. Continental crust is more buoyant. :)
Answer: The period known as classical antiquity began with the emergence of the city-states of ancient Greece. Later, the Roman Empire came to dominate the entire Mediterranean basin. The fall of the Roman Empire in AD 476 traditionally marks the start of the Middle Ages.
Explanation:
I could help, however the photo is extremely blurry
