It would be the "Wagner Act" that allowed labor unions to participate in collective bargaining with business managers, since this was signed by FDR and was thought to be more fair to the individual workers.
Answer:
Europeans exploring and settling North America in the 16th and 17th centuries brought smallpox, measles and influenza, diseases usually associated with domesticated livestock. Native Americans, who generally were in better health than Europeans, did not keep livestock and had no immunity to these diseases.
Explanation:
C I think(the bottom one)
That they were all cannibals and savages.