One of the effect of the interaction between China and Korea is Cultural Diffusion.
Currently, korean culture is a mixture of Japanese and Chinese cultures from their previous contact hundred years ago. You can see the similarties of culture and tradition between these three countries, whether from their traditional clothes, music instrument, writings, etc
In the agreement it said he wouldn’t take the Czech into Germany’s territory... but he broke the agreement and then took Czech under the nazis party aka Germany’s government