Okay, so imagine you have a favorite toy that you really really like to play with. You love it so much that you want everyone to know it's yours. So you put a sticker with your name or a special symbol on it. That way, when people see it, they know it belongs to you!
The Soviet Union was a big country made up of lots of different places and people. They wanted everyone to know that everything in their country, like their buildings and flags and important papers, belonged to their whole country and not just one person or group. So they came up with a special symbol, kind of like a sticker, that they put on everything important to show that it belonged to the whole Soviet Union.
The symbol they used was called the State Emblem. It was a picture of a hammer and sickle, two tools used for farming, in front of a shiny red star. The hammer represented the workers and the factories they worked in, while the sickle represented the farmers and the food they grew. The shiny red star represented the Soviet Union as a powerful and important country.
People in the Soviet Union were very proud of their State Emblem because it showed that everything they did was for the good of their whole country. They put the emblem everywhere, like on their money, on their stamps, and even on their military uniforms. It was a way for them to show that they all belonged to the same big family, and that they were all working together for a better life.