The answer is the one that starts with: to exchange ideas and services.
Answer:
They built walls around their cities for protection
Explanation:
Sargon the Great
Around 2,300 BC, the independent city-states of Sumer were conquered by a man called Sargon the Great of Akkad, who had once ruled the city-state of Kish. Sargon was an Akkadian, a Semitic group of desert nomads who eventually settled in Mesopotamia just north of Sumer.
Answer:
restriction of interest to a narrow sphere; undue concern with local interests or petty distinctions at the expense of general well-being.
Your answer would be soviet union hope this helped have a great day
