After the repeated sinking of American ships, the President declares war. Historic film footage shows some of the first naval battles.

When Germany torpedoes a British passenger ship believed to be smuggling arms, anger at the resulting American deaths increases pressure on President Wilson to enter World War I.

In 1997 Dr.Johan Hultin excavated an indigenous village graveyard in hopes to find the cause of Spanish flu but found much more.

Marcelino Serna came to the U.S. as a undocumented immigrant, and within just a few years, became one of the country's bravest heroes.