That’s the Monroe doctrine, which basically said that the Americas were closed to anymore colonization from European powers.
It affected the society because Martin Luther King was a very good leader who wasn't afraid of advocating for human rights, especially Black people human rights. When he got killed, that affected the society because people feared that if they advocated for people rights, they would get shot and killed just as MLK did.
Have a nice day! :)
This wave ... As the pogrom spread, units of the SS and Gestapo (Secret State Police), following <span>Heydrich's instructions, arrested up to 30,000 Jewish males, and transferred most of them from local prisons to Dachau.</span>
<span>The president tripled the U.S. defense budget, dispatched four divisions to Europe, and authorized the rearming of Germany
Led a United Nation action against the North, known as the Korean War.</span>
Decreased government debt, increased foreign investment, joined the EU, implemented privatization.