Answer:
The war period end at 421 BC with the peace of nicias
Answer:
The growth, or development, of city populations
Explanation:
The river's predictability and fertile soil allowed the Egyptians to build an empire on the basis of great agricultural wealth. Their farming practices allowed them to grow staple food crops, especially grains such as wheat and barley, and industrial crops, such as flax and papyrus
Sir John Harrington invented the flushable toilet in 1596, however the idea of a toilet has existed for thousands of years in much more primitive forms.
