The physical map would show some features that make natural borders, such as rivers, shores, mountain ranges. Those features are then likely places for borders, since they're hard to attach and easy to defend, and the physical features explain why the border is where it is and not for example 5 km next to them
The answer to the question above is "improper farming techniques' which is the cause of the freshwater problem in Australia based. Australia uses most of its fresh water for its agricultural activity which is the major source of its economy<span>. A shortage problem would likely happen from this activity.</span>