Okay, so in Uruguay, some people grow and use a plant called Cannabis. This plant has a special chemical in it called THC that can make you feel happy and relaxed.
For a long time, using this plant was against the law in Uruguay. But, some people thought that it was important to change the law because they believed that people should have the right to use Cannabis if they wanted to.
So, in 2013, Uruguay's government decided to make a new law that says it is okay to use Cannabis as long as you follow certain rules.
That means that if you want to use Cannabis, you have to buy it from a special store that the government runs. You also have to show the store workers your ID so that they can check your age.
When you buy Cannabis from the government store, you can only buy a certain amount at one time. That's because the government wants to make sure that people are using it responsibly and not getting too much of it at once.
Also, it's important to know that using Cannabis can be harmful to your health if you use too much of it. So, if you decide to use Cannabis, you should always be careful and not use too much.
Overall, the law in Uruguay allows people to use Cannabis in a safe and regulated way, but it's important to be responsible and use it in moderation.