I don't know the movement but it was led by humanists so I'm guessing the humanist movement
The churchill speech was considered important because the speech was given when there was critical time in the history of the world.
Churchill speeches were being met with criticism which was from public of Britain and in the United States it was received in a better way.
Churchill believed that a speech can be powerful if vivid pictures and sound waves which bring about rapid succession.
Some of his speeches he said that he will fight on beaches, never despair. He told his people never despair despite what comes on their way.
The countries that officially declared their neutrality in relation to the First World War were: Afghanistan - The country received a German diplomatic mission trying to convince it to act against the British in India, its border neighbors. Argentina.
The declaration of neutrality did not mean total isolation from the war. At a different time, several of the officially neutral nations cooperated with either side or both, allowing the use of their resources or territory in the war effort.
Advances in steel production and oil refining affect US industry History greatly in that it led the US to be one of the more leaders of the Industrial Revolution, next to Britain.