Answer:
Defined boundary is a fixed line (which can be imaginary or not) that marks a boundary.
Step-by-step explanation:
Defined boundary is a fixed line (which can be imaginary or not) that marks a boundary. Through it it is possible to make more than one division between regions, because it can be used to determine the real limits of a country, or any type of territory in a physical and efficient way.
These limits can be established through walls, fences, or even political, cultural and religious ideologies. The important thing is to separate two regions that cannot be understood as one, due to several different factors.