Answer:
Use definitions to explain what a county is.
Step-by-step explanation:
By definition:
"a political and administrative division of a state, providing certain local governmental services."
or
"a territorial division of some countries, forming the chief unit of local administration."
These definitions are perfect for elaborating on-- example:
"'county' is a political division that provides local government services-- sometimes defined as a division of countries that forms the chief unit of local administration."
I hope this is clear!