Short answers, pulled from the story.
The Mesopotamian city of Uruk emerged in the mid-fourth millennium BC. It stands as the first true city in human history, featuring a temple complex that rose 40 feet above the ground and housing almost all non-agricultural aspects of society.
The ancient cities of Mohenjo-daro and Harappa in the Indus Valley Civilization were constructed on a sophisticated grid pattern aligned with compass points. These cities featured advanced sanitation systems that would not be seen again for millennia.
Constantinople emerged as the largest and wealthiest city in Europe from the ninth through the twelfth century. It boasted a population approaching one million while Western Europe experienced a profound crisis of deurbanization.
The proportion of the population living in cities in England jumped from 17% in 1801 to 72% in 1891. This shift marked a fundamental restructuring of society where the city became the great growth engine of national economies.
By 2010, there were 55 megacities, and by 2025, there are estimated to be 87. A megacity is defined as a city with more than 8 million people, with 90% of urban population expansion occurring in Asia and Africa.
The legal principle of eminent domain allows governments to divest citizens of property for projects. This principle is used alongside zoning controls to justify measures through considerations of public health, safety, and community welfare.