Answer: Pax Mongolica, also known as the Mongol Peace was a period of time where peace, stability, economic growth, cultural fusion and cultural development were happening around the Mongol's occupied territories. Pax Mongolica was a time of spreading different ideas and a great cultural expansion around Europe and Asia.
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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.
The answers are in the PDF sorry about the first two I couldn't do them and if you can't open it ask me I can send it another way.