This was Horace Mann. He helped create and design the first educational system in the United States, he was the Massachusetts' Secretary of the Board of Education and he started the "Mann's Six Principles", which were his thoughts of how he would choose decisions. He did a lot for schooling and shaped it how it really is today.
Answer:
China conquered the Mongolian State in 1919.
I think I’m agriculture but I’m not sure
If im not mistaken I think it is Mount Denali in Alaska,and Death Valley in California. Hope this helps.