In the late 1800s, American cities suffered from serious environmental pollution due to the smokestack emissions from hydroelectric power plants. The correct answer is D.
Some people wanted the soldiers to stay so they could end communism all over the world. The would want to push it back so it wouldn't spread.
But a lot more people wanted the soldiers to come back because they didn't trust the government. They would say everything is under control in Vietnam but the poeple would also hear different stories that are negative in Vietnam. The government didn't give the people correct information and the people just wanted the soldiers safe
Answer:
It improved communication across longer distances.
Explanation:
