Question

(i) What has been shown in the above picture?
(ii) When and why did it take place?

Answer 1

(i) The above picture is of Black Blizzard. It refers to the violent terrifying dust storms that began blowing over the southern plains of America during $1930s$.
(ii) The expansion of wheat agriculture led to terrifying dust storms in the $1930s$. In the early $19th$ century, zealous farmers had recklessly uprooted all vegetation, and tractors had turned the soil over and broken the sod into dust. As a result the whole region of the Great Plains had become a dust bowl.