Final answer:
The best description of the change in representation shown by the map is a 'Shift in political boundaries', indicating the redrawing of borders and changes in political units.
Step-by-step explanation:
The statement that best describes the change in representation shown by the map is a 'Shift in political boundaries'. This involves the redrawing of borders that separate political units such as cities, states, or countries. While changes in population density, the alteration of natural resources, and variation in climate zones can have effects on maps, they do not specifically involve the political demarcation represented by borders shown on a political map. An example of this is the Treaty of Versailles, which redefined country boundaries and contributed to political and social tensions in the affected regions. Understanding geographic terms and how climate, ecology, demographic shifts, and economic systems interact are crucial for decoding maps and grasping the ramifications of such changes.