How did the first civilization
Break/fall?
How did Ancient Greece fall?
Ancient Greece was one of the dominant civilizations in the Mediterranean and the world for hundreds of years. Like all civilizations, however, Ancient Greece eventually fell into decline and was conquered by the Romans, a new and rising world power.
Read more at: http://www.ducksters.com/history/ancient_greece/decline_and_fall_of_ancient_greece.php
How did Ancient Rome fall?
Rome began in about 753 BC by two twin brothers named Romulus and Remus. They were both raised by a she-wolf. They were over thrown by a German man named Odoacer. He became the ruler of Rome, and the first barbarian to rule Rome.
It appears...
It appears that many fall from war or no food/water left
A few fall due to lack of crops, rain, no repopulating and no-one coming to discover the new area.
Main topic
How did Aztec fall?
The Spanish campaign began in February 1519, and was declared victorious on August 13, 1521, when a coalition army of Spanish forces and native Tlaxcalan warriors led by Hernán Cortés and Xicotencatl the Younger captured the emperor Cuauhtemoc and Tenochtitlan, the capital of the Aztec Empire.