the Sumerians developed these to maintain a stable food supply

I was the first ruler of an empire, in which it was the worlds FIRST empire

an attack or blockade by a military that makes a city force to surrender

i am one of the characteristics of civilization and I have to do with architecture

I am sargon´s son

the business of buying, selling, and exchanging goods, items and resources.

one example of me is cuneiform and I am a characteristic of civilization

I made one of the first written laws and was a very strong leader

I am a char. of civilization and make people of greater status than others

we made the first sun dial

I am a very important characteristic and I am in all civilization

I made the hanging gardens of babylon