Okay, kiddo! Let me explain Latinisation in the Soviet Union in a way that you can understand.
In the Soviet Union, there were a lot of different languages spoken. Some people spoke Russian, but there were also people who spoke Ukrainian, Belarusian, and other languages. The government wanted everyone to speak Russian, but not everyone was happy about that.
So, they came up with an idea called Latinisation. This means that instead of writing in the normal alphabet (like the one we use), they would write in a different one that looks more like the letters you see on a computer keyboard. It's called the Latin alphabet.
Why did they do this? Well, they thought it would be easier for everyone to learn Russian if they used the Latin alphabet instead of their own. And they also thought that it would help bring everyone in the Soviet Union together, since they would all be using the same alphabet.
But not everyone liked this idea. Some people thought that it was a way for the government to control them more, and they didn't want to give up their own language and culture.
In the end, the government decided not to go through with Latinisation, and most people still use their own alphabets to this day. But it was an interesting idea that shows how language and culture can be really important to people.