29 сент 91 г. до нашей эры - Public Health and Sanitation Systems
Описание:
- Created aqueducts to carry clean water to the cities
- Built sewers to carry waste materials away from cities
- Used filtering systems in public baths to prevent disease
- Drained marches to reduce the incidence of malaria
Добавлено на ленту времени:
Дата:
29 сент 91 г. до нашей эры
Сейчас
~ 2117 г назад