An increase in Child Labor due to not being able to pay adults, so they saw children as the best suitable option for 1.Free Labor and 2. No pay.
The lessons that can be learned from the McCarthy era have to do mainly with freedom of speech and the rights that people should have when they are being accused of something.
Joseph McCarthy was an American senator who prosecuted many individuals because of their supposed ties with communists, spying for the Russians or any other kind of danger they could represent for USA and its people during the Cold War.
Because of this, many people were unfairly imprisoned, questioned, and their lives ruined. It's very important to avoid repeating these mistakes, as all citizens should be able to express themselves freely and have the right to defend themselves from false accusations.
Assuming you're referring to Bernhard von Bülow, yes it is likely that he approved of this idea, since he was a leading diplomat in Germany during Germany's colonial period, which was largely justified as "stronger" nations preying on "weaker" ones, especially in Africa.
Answer:
In his farewell Presidential address, George Washington advised American citizens to view themselves as a cohesive unit and avoid political parties and issued a special warning to be wary of attachments and entanglements with other nations.
Hope this helps :)
