Hit Musicals, like Hit Singles and Hit Movies and unlike other resources, cannot be obtained by improving a tile. Instead, the owner of the Broadway wonder obtains a certain number based on the map size. Other players must trade with them or conquer the wonder to get it.
As the owner of the Broadway wonder has a monopoly on this resource and controls who does or doesn't have it, it's great for a builder playing the diplomatic game.
Providing AI leaders with resources boosts their relations to you, which helps reduce the risk of war. If they decide to go to war with you anyway, they'll take a happiness hit from losing the resource. The risk of a happiness hit could also help put other players off trying to attack you in multiplayer, though you'd likely need a monopoly on all three resources for it to be significant enough.
As with the other "Hit" resources, Roosevelt is a very good leader to aim for the attached wonders due to America's unique building boosting their effectiveness and Roosevelt being an Industrious leader.
"Drama" is defined as a literary form in which the author writes parts for actors to play. Usually the actors are playing the parts of other people and the drama displays an event in which those people participate. Western drama as we know it was invented by the Greeks sometime in the fifth century BC. The very first dramas were probably lyric poems sung by a chorus eventually actors were added to portray heroes and villains in the poems. Western drama has changed very little in form since then.
The date of origin of Eastern drama is widely debated, primarily because scholars don't agree upon what elements are necessary to distinguish drama from other art forms such as pantomime, dancing, and certain religious rituals, some of which date back to over four thousand years ago. It is known that a Chinese theatre opened in around 700 BC.