Answer:
Ural Mountains
Explanation:
The Ural Mountains are the naturally formed boundary that separates Europe from Asia. They are currently in <u>Russia</u> and <u>Kazakhstan</u>.
An effort to change an action
Ummm I'm not sure have you tried to look it up
After WW1, most Americans were in denial of their place in the world. They went on a period of "isolation" from Europe. After WW2, they realized what President Wilson said was correct: that another World War would happen, even worst than the first, if we do not take action against it. America would have to participate in settling world problems if another Great War was to be prevented.
Hope this helps! Have a great day :)