I need to know if this is Expansion diffusion, Hierarchical diffusion, Contagious diffusion, etc. "Initially, kung fu was really only an...

I need to know if this is Expansion diffusion, Hierarchical diffusion, Contagious diffusion, etc. "Initially, kung fu was really only an elite art practiced by those with power. But due to occupations by the Japanese, French, and British, the Chinese began to encourage martial arts experts to open their doors and teach what they knew to the native masses in an effort to expel foreign invaders. "