1/10 The war in Iraq started in March with the bombing of Baghdad. The fighting started because the US and UK governments believed Iraq had weapons of mass destruction
2/10 The bombing lasted for 24 nights and many soldiers and Iraqis lost their lives. Thousands of people demonstrated against the war and lots of you walked out of class to protest
3/10 By April Iraqi President Saddam Hussein's rule was over and people took to the streets to celebrate by pulling down his statues and defacing pictures of him
4/10 Saddam Hussein disappeared and a huge manhunt was launched. Finally in December he was found hiding in a hole near his hometown of Tikrit. He's being questioned by US forces and will stand trial in the future
5/10 But the violence continues in Iraq. Most days there are attacks on coalition soldiers.
6/10 A killer flu spread across the world infecting more than 8,000 people. Around 900 died from the virus - known as Severe Acute Respiratory Syndrome - or Sars. There were only four cases of it in the UK
7/10 Space shuttle Columbia was on its way back down to earth in February when it exploded - killing all seven astronauts on board. US space agency Nasa has been partly blamed for the disaster
8/10 There was more violence in the Middle East in 2003. Israel and Palestinian groups have been fighting for more than 50 years over how much land each should control in an area called Gaza as well as parts of Jerusalem.
9/10 This year building started in the region on a massive dividing wall of concrete, mesh and razor wire to separate the communities - but some countries reckon the wall could create more hatred between the two sides
10/10 Millions of people were left in the dark by the biggest blackout in US history. Major cities were left in darkness across North Eastern America and Canada.