The answer would have to be b
The main reason why this was the case is because Industrialization was an incredibly new phenomenon, and very few people could have predicted just how bad it was for the environment and for people's health.
Answer: Yes the United States was justifed in entering worl war 2
Explanation: Reasons why The Japanese Attack on Pearl Harbor, Japanese Control of China and Asia, Germany's Aggression and Unrestricted Submarine Warfare Sinking U.S. Ships, Fear of German Expansion and Invasion. But the neutral USA entered World War II only after many months of argument in Congress and among the general public, and only when a Japanese fleet launched a big surprise air raid against its Pacific naval base at Pearl Harbor in Hawaii on 7 December 1941
I think of Ancient Greece and how they developed the sense that every citizen should have the right to speak and say his opinion freely. Democracy gives people the ability to speak for themselves and make society better.
They sparked an interest in new ideas. When the men left their hometown to go fight they learned many new cultures and even brought some traditions home. Therefore that also brought new ideas about how things work.