Explain what a county is

A county is a geographical region of a country used for administrative purposes and other purposes, in certain modern nations. The county is derived from and Old French Cune (the word has a "t" between "n" and "e" and it's an offensive word so it will not be shown fully) denoting a jurisdiction under the sovereignty of a viscount or a count.

a territorial division of some countries, forming the chief unit of local administration.

Explanation:

A county is a specific region of a state or country. While the United States is made up of 50 states, it also has 3,144 counties. In the US, a county is a separate administrative area of a state - in other words, there is a local government that manages each individual country.