What tool was developed by civilizations to assist in managing the difficult concept of time by dividing the year?

What are the Ancient Egyptians most credited for?

What are the qualities that make up a successful civilization?

Question

What tool was developed by civilizations to assist in managing the difficult concept of time by dividing the year?

What are the Ancient Egyptians most credited for?

What are the qualities that make up a successful civilization?

anonymous · Answer

I think the first one is Calender's..

anonymous · Answer

The first one is calendars 
2. They're most credited for the structures they built like The Great Spinx, The Pyramids, Giza, and so on.
3. What made their civilization so successful was their powerful army, strong government and well kept economy.

kohai · Answer

Calendars 
Pyramids, Spinx
Army, government, economy