The statement that best describes how the international reactions to the Rwandan genocide and the 9/11 attacks compare is:
The international community immediately responded to 9/11 but did not react to Rwanda until after the genocide occurred, based largely on differences in geography, culture, and political systems.
This statement accurately reflects the contrasting responses: the 9/11 attacks prompted a swift and robust international response due to the immediate nature of the threat and its impacts, while the Rwandan genocide saw limited intervention and delayed action, heavily influenced by factors like the geopolitical context, the international community's understanding of the situation, and historical precedents regarding intervention in African conflicts.