In sculpture, what is modeling? Name two benefits to this technique of sculpture

In one to two paragraphs, explain how changing context and interpretation have influenced viewpoints of dorothea lange’s portrait "migrant mother.” in your analysis, be sure to include the photograph’s meaning amid changing social, economic, and political climates, as well as the photograph’s value to photojournalism. include supporting evidence in the form of details, statistics, facts, or quotations.