In This Day in History video clip: In Philadelphia, Pennsylvania, the Continental Congress adopts the Declaration of Independence, which proclaims the independence of the United States of America from Great Britain and its king. This video clip is courtesy of The History Channel.
The story of how America’s battle to control the seas against the terrifying German U-boats in the Atlantic and Japan’s fearsome Navy in the Pacific ultimately turns the tide of the war. See more in this clip from Season 1, Episode 5, "The War at Sea."