Answer:
They have asymmetrical balance and a sense of movement.
They are examples of documentary photography or Precisionism.
They depict American industrial sites and powerful machines.
Explanation:
Lewis Hine was an American Sociologist who used his camera and photography skills to highlight the social reform taking place in the country, one out of which is child labor.
Charles Sheeler was a painter and a commercial photographer.His famous type of photography was known as quasi-photography which focused on precision and balance, and also took him to great popularity.
