Why did president wilson champion the keating-owen child labor law, an eight-hour workday for railroad workers, and other social reforms in 1916?

The slave dred scott sued for his freedom because he was born a free man. he had lived in a free state. slavery violated the 13th amendment he had been freed by pres. lincoln.

Which event occurred in 1943 and to make the allied victory possible choose all answers that are correct

During the 1920’s why did the us policy change