Answer:
What are the five features of a civilization?
ans/
(1) advanced cities, (2) specialized workers, (3) complex institutions, (4) record keeping, and (5) advanced technology
What different kinds of activity went on in Sumer?
ans/
Whenever the Sumerian civilization was first established in the region, by 3600 BCE they had invented the wheel, writing, the sail boat, agricultural processes such as irrigation, and the concept of the city (though China and India also lay claim to `the first cities' in the world)