Can you figure this fourth movie riddle,...?

Question

from these clue words?

Here are your 4 clue-words;

Musical

Independence

Comedy

Revolution

*Rules*

Those who are new to this, there will be questions posted through the weekdays. The first correct answer will receive the points. New clues will be posted throughout the day if no one gets the correct answer. You can check up to see how the guesses are coming. Guess as many times as you like. Like all of my movie riddles there will be 4 for today (one from the 70's, one from the 80's, one from the 90's and one from this decade,) and good luck.

Answer 1

History of the World, Part 1

Answer 2

http://www.NObama.com

Answer 3

1776

Answer 4

Across the Universe?