The presidential election<span> of </span>1940<span>, won by </span>Franklin D<span>. </span>Roosevelt<span> with 449 </span>electoral votes<span>.. Roosevelt, aware of strong isolationist sentiment in </span>the U.S.<span>, </span>promised<span> there would be no foreign wars if he </span>were<span> re-elected..</span>
European nations had new sources of raw materials and other resources.
Brown v. Board of Education was a landmark case in which it was finally proven that segregation in institutions of education was highly unconstitutional, so you could say that that is the greatest effect since it made other schools become open for everyone as well.
Answer:
The United States accepted its role as a world power after World War II, helping to rebuild Europe and Japan and taking the leading role in establishing the United Nations
