Natural disasters are often not natural disasters, but are in fact human disasters. why?

Which of the following best summarizes the point of agreement?

What was the most difficult obstacle to overcome in the creation of an autonomous state after indian independence was achieved? a british willingness to go to war to retain the region b. religious differences between hindus and muslims c. ethnic differences between tribal regions d. indian princes' inability to decide on a format of government

Name one type of data that h-r diagrams do not show.