Societal survival of the fittest
Weak societies will fall and be taken over by stronger societies.
Democratic societies tend to become weak and this cannot last forever, you can utilize weaknesses in democratic systems to slowly grab power, after that there will not be any more real democracy.
One way to measure how successful a society is to look at survival and reproduction (birthrate). The by far biggest factor limiting the birthrate is females unwilling to have even close to the max number of children.There are several brutal methods (baby quotas, females as property) to maximize the fertility rate among desired females.
13 is a good age for a female to start breeding, if she is finished breeding early that will allow her to enter the economy and be productive to society early. It's also easier to force a young females to have children since it will be difficult for her to flee or fight back.
We also need to have a strong economy so we can support all our children we forced females to have, this will also allow us to build a strong military. In order to build a strong society we need to be inclusive, not exclude people based on ethnicity, sexual orientation or gender expression. By attracting important individuals to our society we make it stronger.
https://vintologi.com/threads/immigration.776/
Unless you are militarily stronger than all other countries on earth combined it's very important to build strong alliances to ensure you will come out victorious in the case of a world war. By winning the world war we will be able to dractically expand our borders and eventually rule over the entire planet.