that would have been Hideki Tojo
the answer to your question is a) they had advanced planning and developed effective military methods.
Actions by the federal reserve system to expand or contract the money supply
It gave Americans a wrong view on the war and got them involved. As the Spanish and humans were seen as savage animals but as Yellow Journalism is exaggerated press it was not in fact true. As the people saw the newspaper they demand their government to get involved in the war
People could fly places or drive to see family more and use it more in diffrent ways.