Question

1. which of these developments occurred because of the introduction of street cars in cities?

use of skyscrapers
movement of african americans north
design of better sewers
development of suburban areas

Explanation:

To solve this, we analyze each option:

• "Use of skyscrapers" is related to building technology, not street cars.
• "Movement of African Americans North" (Great Migration) was due to economic and social factors, not street cars.
• "Design of better sewers" is about urban infrastructure unrelated to street cars.
• Street cars allowed people to live farther from city centers and commute, leading to suburban development.

Answer:

D. development of suburban areas