It allowed Americans to commit to affairs outside of the US. They now deal with affairs overseas due to the WW2, which "forced" American to enter because of the incident on Pearl Harbor. America also commit to many "mission trips" to other countries in need of help, like the Jews needed after the Holocaust. Also, when the Jews migrated to the US after the Holocaust, their writing impacted our views on the Holocaust, creating a new and thorough history to dig deeper into.