During the president transition, there is a transfer of power from the current president to the next one, unless a president is serving two terms. then the president is sworn in by placing a hand on a bible or a chosen book and is sworn in. hope this helped!!
Assuming you're referring to World War I (or World War II for that matter...) you should include in this letter--if you're an American--how you are very much against getting involved in a European conflict, since America was very "isolationist" during this time.
