Here are some of the significant events that took place in the year 2004:

• George W. Bush was re-elected as the President of the United States in November 2004.
• The Summer Olympic Games were held in Athens, Greece in August 2004.
• The Facebook social network was launched at Harvard University in February 2004.
• The Iraq War continued, with the transfer of sovereignty from the U.S.-led coalition to the Iraqi Interim Government in June 2004.
• The Indian Ocean earthquake and tsunami occurred on December 26, 2004, causing widespread destruction and loss of life in several countries in South and Southeast Asia.
• The first version of the Apple iPod was released.
• Google went public and became one of the largest technology companies in the world.