Step-by-step explanation:
Historical context: The text tells the story of one of America's most deadly storms; The Schoolchildren’s Blizzard of 1888. We can remember, that at the time there were no advanced/efficient weather forecasting tools and they were way through the winter season.
Intended audience: The text was intended for those who did not witness the events of that tragic day. For example, this was indicated with the statement "In the 1930s, during the Great Depression, the WPA Federal Writers’ Project...created by the US government...interviewed survivors of the Schoolchildren’s Blizzard."
Author's purpose: The author only seeks to narrate events that occurred by including the accounts of those who witnessed and survived it.
Author's point of view: The opening lines of the text reveals his point of view when he said, "The winter of 1887–1888 was one of the worst on record for the Midwest."