On 8 October 2005, a huge earthquake happened, leaving about 75,000 dead and hundreds of thousands without homes.
Much of the worst damage was in a place called Kashmir, which Pakistan and India each control a piece of.
The middle of the quake - called the epicentre - was 80km (50 miles) from the Pakistani captial Islamabad.
2005 EARTHQUAKE TOLL
Pakistan side: 73,338 dead
India side: 1,360 dead
Affected population: 3.5m
Area affected: 30,000 sq km
Still in tent camps: 35,000
The quake was felt across South Asia. By 27 October, more than 1,000 aftershocks (shudders which happen after the quake) had been recorded.
It was one of the worst natural disasters in Pakistan's history.
As well as killing many people, the earthquake destroyed homes, offices, roads and power supplies.
Rations: 256,376 tonnes
Medicines 2053.76 tonnes
Many countries promised to help with aid.
By 11 November, 3.2m blankets and 3,000 tonnes of medicine had been given out. Villages of tents had been set up to give people shelter.
Many aid workers have stayed in the area, training people and helping to rebuild homes and schools.
A year later, about 400,000 people face a second winter without proper homes.
Almost one million tents have been handed out since the earthquake to provide shelter for homeless families.
The Pakistani government has already handed out $44m (£23.4m) to more than 379,000 people to help them to rebuild their homes.
More than 69,000 people were severely injured in the earthquake, and an estimated 10,000 children left disabled.
Amazingly, the UN says the emergency was actually useful for some children.
More than 1.25m children in the region were given medicine to stop them catching polio, meningitis and measles.
They might not have got the treatment otherwise.
More than 6,000 schools and colleges were destroyed in the earthquake.
Pakistan plans to rebuild 1,574 of them during 2006 and 2007.
The UN says since the earthquake some girls are going to school now who have never been to school before.