Who were the first people to live in the city-states?

Which states had no areas with a population density of more than 18 inhabitants per square mile? How long is 15 sentences? What presidents have hit the social security the most? Does a US citizen need a visa for travel to Hongkong? How do you use horribly in a sentence? What is the zip code for limerick? Can you give me another sentence using the word possible? Can you draw unemployment while you student teach? How many people in the US are 103 years old? Who will pay for work related injury? What is the law for running a stop sign in a neighborhood? When you adopt someone can you get a birth certificate made? Why there is a sudden increase in the population in the world? How many people live in Miami beach? How do you use municipal in a complete sentence? How many people take up a mile? How can the word 'area' be used in a sentence? Where is Andorra la Vella? What is Klei Entertainment's population? What is the short form for central?