What forms does historical evidente come in?

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?

What militaristic words does henry use when making his argument? how do they impact the effectiveness of his speech?

What are new social classes emerged due to advancement in agriculture ?