Okay kiddo, so Yugoslavia used to be a country where people lived together under a government that believed in something called socialism. This means that they didn't want there to be rich people who had more money than other people, and they wanted everyone to have the same opportunities and resources.
Now, when we talk about the demographics of Yugoslavia, we mean things like how many people lived there, what languages they spoke, and what kind of jobs they had. Yugoslavia was made up of many different groups of people, including Serbs, Croats, and Bosniaks, who spoke different languages and had slightly different cultures.
In Yugoslavia, the government tried to make sure that everyone had access to education and healthcare, and that people could work and make a living wage. They also tried to make sure that everyone had the same rights and opportunities, regardless of their race or gender. This meant that women could work outside the home and have equal pay, and that minority groups were represented in government and public life.
Overall, the demographics of Yugoslavia reflected a diverse and largely equal society, where everyone had the chance to thrive together. However, like any country, Yugoslavia had its own challenges and problems, and eventually the government fell apart and the country broke up into smaller nations.