Yes, what that person said before me !
Answer: He created the concept of the "kindergarten".
Explanation: He created the concept of the "kindergarten" and coined the word, which soon entered the English language as well. He also developed the educational toys known as Froebel gifts.
Answer:
Letters and publications written by Nazi leaders before the Second World War.
Explanation:
This answer is correct because this historian is searching for the motives of these perpetrators, letters and publications can tell their thoughts and conversations.
A constitution is the document
The Europeans made few attempts