Why did the Barbary Pirates not attack US ships before the War of Independence ended?

View this video & respond to the following questions (type them right into the text box or upload a file:
https://www.youtube.com/watch?v=BPMcF-z9i0M

  1. Why did the Barbary Pirates not attack US ships before the War of Independence ended?
  2. How did the United States originally respond to the attacks on their ships by the Barbary Powers? Why did this option not work?
  3. Did the money the US gave to the Barbary Powers stop the attacks on US ships? Would more money have helped to solve the situation peacefully, in your opinion?
  4. What were the consequences of the US winning this war (last 5 minutes of the video)