How did the idea of manifest destiny push the expansion of the united states into oregon california and the former mexican territories

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?

Religious men who lived apart from society

Could anything have been done through compromise to stop it, or did it have to happen?