What is an urban operating system

The answer is: a central data hub for a "smart"city

It is basically a futuristic society where every activities can be controlled by computer programs and internet.

The application of urban operating system would cut down the cost that the government must make in paying employers salaries since most of the  workers can be replaced by computer.

One downside of such society is that it would resulted in large number of unemployments.

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

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