Answer:
When Darius failed to conquer the Danube tribes, the Greeks likely felt a sense of relief and saw it as a victory for their own autonomy and independence.
Step-by-step explanation:
Darius I, the Persian king, attempted to conquer the Scythian tribes living along the Danube River. This event is often associated with the Persian Wars, which included conflicts between the Persian Empire and various Greek city-states. The Greeks, who valued their freedom and autonomy, would likely have seen Darius' failure to conquer the Danube tribes as a positive outcome, as it meant that the Persian threat did not extend further into their territories. The Greeks may have interpreted this as a sign that they could resist Persian expansion and maintain their independence.