The one that is the msot effective to include is <span>US victory in the Spanish-American War in 1898.
</span><span>US victory in the Spanish-American War in 1898 basically help the majority of South American region to obtain their independence in the spanish.
This result of this war opened up a mutually beneficial relationship between us and southern american nations in term of trades, resources exchange, millitary alliance, etc.</span>
The Marshall Plan was designed to rebuild the European industry. It was also known as the European Recovery Program where the Americans aided Western Europe with $13 billion. This was aimed to give economic support to several European countries that were greatly affected by World War.
The Munich agreement
The Munich agreement was a settlement permitting Nazi Germany's annexation of portions of Czechoslovakia along the country's borders mainly inhabited by German speakers, for which a new territorial designation "Sudetenland" was coined.
The Union Solders had complete controller over the Mississippi River
