why did urban areas develop subway, elevated ...

why did urban areas develop subway, elevated train, and streetcar systems?\no to make it possible to transport raw materials and finished goods\no to provide transportation for rural workers who lived in cities\no to make it possible for people to move around within cities\no to provide transportation for urban workers who lived on farms

Answer

# Brief Explanations: Subway, elevated train, and streetcar systems are urban - transit means. Their main purpose is to help people move within cities. # Answer: to make it possible for people to move around within cities