aqueduct
a pipe or channel that carries water
civilization
a well-organized and developed society or community
impurity
a substance that makes something unclean or polluted
population
the people who live in a place
sanitation
the act of keeping an area clean and germ-free
sophisticated
very developed and complex
architecture
the style and design of a building
course
a planned way
depth
a distance below a surface
fountain
a structure that sends water up into the air
manage
to direct the organization or usage of something
site
an area or place
