1. Germany is the first country to set up compulsory education and force children to go to school.
2. Capitalism entered the democratic stage early, with high social productivity and violent compulsory education.
3. Feudal society aims to safeguard the interests of rulers. Therefore, compulsory education, a kind of universal education, is not allowed. Because people's thoughts will be very active.
4. Feudal society didn't have enough productivity to satisfy compulsory education.