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34 votes
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Following the course of a physical feature such as a river or ridge line *

Political Boundary
Geometric Boundary
Natural Boundary
Artificial Boundary

User DenimPowell
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1 Answer

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21 votes

Answer:

Natural Boundary

Step-by-step explanation:

Natural Boundaries are made by nature. Rivers, mountains, and other landscape features, are often used as natural boundaries/borders

User Jan Nash
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