Mexico,USA,Italy are just to name a few
Answer:
statement originally set forth in 1823 which created separate spheres of European and American influence. The United States promised to stay out of European business and told the Europeans to stay out of the Western Hemisphere's business.
Explanation:
The U.S. promised to stay out of Europe's business and the European's promised to stay out of the United State's business. Basically an agreement between the two the mind their own business.
The correct reason is that Tecumseh was killed, which ended the possibility of a Native American confederation to oppose the United States. Hope this helps.
Answer:
The assassination of Archduke Ferdinand of Austria-Hungary.