What factors influence the spread of nationalism?

THe factors that give birth to nationalism in the Philippines is that the time when many foreigners invaded the country specially during the spanish period who enslaved the filipino people who supposively the ones who owned the land who worked for the ivaders thats why they exact revenge...

another is Dr. Jose Rizal who wrote 2 novels Noli me tangere and El filibustirismu that woke up the hearts of Filipino to fight for their mother land...