What will happen to Custralia in C years?

Without specific context about what "Custralia" refers to or the nature of "C years," it's difficult to provide a precise answer. Generally, if Custralia is a fictional or hypothetical place, its future in C years would depend on the events, policies, or developments that are projected to occur during that time frame. Factors such as economic growth, environmental changes, and social dynamics would likely play significant roles in shaping its future.