The art that involves performing in front of a live audience to portray a real or imagined event is called Theatre.
Answer:
news stories before WWI focused primarily on national affairs while news stories during WWI focused on international politics and the conditions of war.
Explanation:
That's the line that compares it and says how it changed
A few weeks later, under the new title of ''Oklahoma!,'' Rodgers and ... play'' arrived in New York and changed the course of American musical theater. ... into a moody, bittersweet libretto that took little time out for the formulaic, ... both the serious Broadway musical and of Sondheim's groundbreaking career.