What powers do states have/what powers does the federal gov. have/ shared powers

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?

Brainliestttme : ) how did the soviet union try to maintain control?

What was the underlying cause of the cold war?