Which of the following inventions did not help fuel the agricultural boom
in the fi rst half of the 19th century?
AThe cotton gin
BThe steel plow
CThe mechanical reaper
DThe steamboat
EThe cigarette-rolling machine
in the fi rst half of the 19th century?
AThe cotton gin
BThe steel plow
CThe mechanical reaper
DThe steamboat
EThe cigarette-rolling machine