15 PROCESSING Below is a drawing of John Gast's painting American Progress. Annotate the drawing by adding a speech or thought bubble for four elements in the painting- people, animals, or objects. In each bubble, write a short paragraph to express how that person, animal, or object might respond to the Essential Question: How justifiable was U. S. expansion in the 1800s? Include as many of the Social Studies Vocabulary terms as possible in your paragraphs.