In 1999, Argentina was a country in South America where lots of people lived. It was a special year because the people who were in charge of the country had done some bad things with the money. Money is important because it helps people buy things like food, toys and clothes. When the people who were in charge of the country didn't use the money in the right way, it made it hard for other people to buy things they needed.
This made a lot of people very unhappy and they started doing something called protesting. This means they went outside with signs and shouted to show they were upset. The people who were protesting wanted the people in charge to do the right thing with the money.
The people who were in charge then decided to change the rules so that everyone could choose someone to be in charge. This is called an election. Everyone can vote in an election to choose who they want to be in charge.
In 1999, lots of people voted and they chose a new person to be in charge named Fernando De La Rúa. He wanted to make things better for the people in the country. He made some new rules to help people and things started to get better. The protesting stopped and people were happier.
That's what happened in Argentina in 1999 - people were upset because the people in charge were not doing the right thing with money. They protested and then chose a new person to help make things better.