How do historians build and support their historical arguments

What triumphs did the late 19th century witness in the realms of industrial growth, urbanization, and technological innovation? what challenges did these developments pose for urban dwellers, workers, and recent immigrants? how did city officials and everyday citizens respond to these challenges?

How does the process of constructing a historical narrative differ from the process of creating a timeline

How did testimony such as this from the triangle shirtwaist factory disaster affect the workplace?