Okay kiddo, so let me explain to you about the 2008-2009 financial crisis in Belgium. You know how you have a piggy bank where you save your money, right? Well, big banks also have lots of money that people save with them. But sometimes, these banks use that money in ways that are not safe.
In 2008, there were some big banks in the United States that weren't safe with their money, and they had to close down. This caused a problem because those banks had also given money to other banks all over the world, including in Belgium. When those banks couldn't get their money back, they too had to close down or had problems, which made people worried about their own money.
People became scared and didn't want to put their money in Belgian banks because they thought they might lose it. This made it difficult for the banks to keep running smoothly, and some of them had to ask the government for help.
The Belgian government then stepped in to help the banks and make sure that people could still get their money out. They put lots of money into the banks to help them, and created new laws to try to make sure this wouldn't happen again in the future.
So, in summary, the 2008-2009 financial crisis in Belgium happened because some big banks around the world were not safe with their money, which caused problems for other banks in Belgium. The government had to step in to help the banks and create new laws to prevent it from happening again.