Lower class because they worked hard to earn there money
D. indians traded among numerous groups for goods that came from hundreds of miles away.
The correct answer is letter C. Ralph Nader's book Unsafe at Any Speed brought about safety regulations in automobile products. This book became controversial for the automobile industries because of the absence of safety gears inside the cars (e.g. seatbelts, airbags) which eventually led the government to issue car safety regulations and paved the way for the presence of these preventive measures in automobiles up to present.
