Those europeans who spoke of imperialism as the "white man's burden" claimed that europeans
suffered great hardships in colonizing other lands
were guilty of destroying traditional cultures in africa and asia
had a responsibility to spread the benefits of western civilization
experienced too many military casualties in conquering foreign lands

The correct answer is that they claimed Europeans "had a responsibility to spread the benefits of Western civilization."

Europeans say the people of their colonies as inferior to their own. They say the races as uncivilized and primitive. To justify their imperialism and in some cases, extreme westernization, they said that they were helping the colony. Europeans claimed that colonizing the country was mutually beneficial and that they had a responsibility or "burden" to help the people out.