What is the difference between a physical boundary and a political boundary?

the difference between a political and a physical boundary is that a physical map shows geographical features like mountains and rivers while a political map shows boundaries.

One is made by people(politicians), the other by nature. So , occasionally, a

political boundary will be a straiight line but there are no straight lines in nature. A river is a common and convenient, physical boundary with two obvious sides. Sometimes, a river may run between two countries and thus becomes an example of a physical boundary serving as a political boundary.A mountain range may serve a similar purpose.