Final answer:
Geographic Information Systems (GIS) is the decision-making tool particularly useful for decisions with a geographical aspect, empowering geographers with spatial analysis capabilities. Cartography complements GIS as a visual aid for spatial data.
Step-by-step explanation:
When decisions have a geographical aspect, the decision-making tool that is especially useful is known as Geographic Information Systems (GIS). GIS has become the modern geographer's lightsaber, a versatile and powerful tool that allows for the analysis of data in a spatial context. This software enables the exploration of spatial questions and the solving of problems through a unique spatial epistemology that geographers utilize.
Cartography, the art and science of making maps, goes hand-in-hand with GIS as a method of visualizing spatial data, allowing geographers to see trends and illustrate relationships. Maps become a graphic tool that convey spatial data about the Earth's surface and are fundamental in disciplines such as environmental science, urban planning, and resource management.
GIS can display data in different layers, revealing patterns like clustering of crime, prevalence of diseases, or locations of businesses, which can help decision-makers. Its ability to integrate and manipulate spatial data makes GIS indispensable in modern science and problem-solving concerning geographic space.