City-State
A political unit made up of a city and surrounding villages is called a metropolitan area or urban agglomeration.
The four political units in the Philippines are barangay (village), municipality/city, province, and region. These units are hierarchical with the barangay being the smallest local government unit and the region being the broadest.
Federalism is a system of government in which power is divided between a central authority and constituent political units, such as states or provinces. This division of power allows for a balance between national unity and regional autonomy.
California has the largest number of urban units in the United States.
Federalism is a system of government where power is divided between a central authority and constituent political units, such as states or provinces. It is used in various countries like the United States, Canada, Germany, and Switzerland to accommodate diverse regions and balance different levels of government. Federal systems can help decentralize power, protect minority rights, and promote government efficiency through local decision-making.
In the case of making a house from bricks, it is called "building". Perhaps the term "assembling" could also be applied and if you were to be making a polymer then polymerization would be the term to use. If you were assembling something using words as sub units the process would be called writing or if you were a musician, composing. If you were a computer programmer then the process would be called coding. This answer is probably not exhaustive.
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From Mesopotamia to the most famous rivers Tigris and Euphrates
How about confederation?
It measures the temperature of the surrounding environment in units called Fahrenheit.