This river was the main source of life, water, and fertile soil for the Ancient Egyptian civilization. Without its annual flooding, the kingdom would have been a desert.
Nile River
This Greek city-state is considered the birthplace of democracy, where citizens gathered to vote on laws and participate in the political process.
Athens
Developed by the Sumerians in Mesopotamia, this is recognized as the world's first system of writing, characterized by wedge-shaped marks on clay tablets.
Cuneiform
Large statue with a lion's body and human head] This limestone monument stands on the Giza Plateau. It is thought to represent the Pharaoh Khafre and serves as a guardian of the Great Pyramids.
Great Sphinx of Giza?
Ruins of a massive oval amphitheater] Located in the center of Rome, this massive structure was used for gladiatorial contests, animal hunts, and public spectacles for over 50,000 spectators.
Colosseum
Stepped pyramid/tower structure] These massive, stepped-temple towers were built in Mesopotamia as dwelling places for the gods. Each city had its own to honor its patron deity.
Ziggurat
This "Boy King" became one of the most famous pharaohs in modern history because his tomb was discovered nearly intact in 1922 by archaeologist Howard Carter.
Tutankhamun
This famous Roman general was declared "Dictator for Life" before being assassinated by a group of senators, including his friend Brutus, on the Ides of March.
Julius Caesar
A long fortification stretching across mountain ridges] Built over centuries to protect against invasions from the north, the unification of this massive defense project began under the Qin Dynasty.
Great Wall of China