Which was a major cause of environmental pollution in American cities during the late 1800s?
A.
electric-powered streetcars
B.
diesel-powered railroad locomotives
C.
internal-combustion engines in automobiles
D.
coal-fired stoves, factories, and power plants
A.
electric-powered streetcars
B.
diesel-powered railroad locomotives
C.
internal-combustion engines in automobiles
D.
coal-fired stoves, factories, and power plants