Population
Population is groups of humans living in Empires. Humans can live on Planet, crew Ships and exist in many other environments. Population requires Food and Insurance to stay healthy and productive. In good conditions population naturally increases over time. In Librae, large groups of homogenous population are usually considered for their shared characteristic.
Planned features
Culture
Humans which share a culture are usually grouped together and can act collectively. If the culture is similar to the government's culture, the population is most content, otherwise it might require a degree of autonomy. Tensions between different cultures have to be managed by separation or special administration measures.
Luxuries
Humans can consume various goods, starting with excess food and fuel, to raise their happiness. Groups can develop a habit to a certain luxury, which will increase their tolerance to it and eventually require more of it to even stay content.
Human Resources
Population have levels of various useful characteristics, like expertise in some craft. Such levels are called HR. Level of HR can decrease if humans are hired to work elsewhere (but increase in the target group) or killed, and can be raised by education, exposure to some conditions, or working on something. Higher HR levels lead to higher productivity.