The koryu dynasty’s leaders believed that their politics should be guided by the principles of

shintoism.
buddhism.
confucianism.
taoism.
will upvote again

The Koryu dynasty’s leaders believed that their politics should be guided by the principles of Confucianism. Option C is correct.

Confucianism tends to be characterized as a system of social and ethical philosophy rather than a religion. The founder of Confucianism was Master Kong also known as Confucius. Confucianism was developed from what was later called the Hundred Schools of Thought from the teachings of the Chinese philosopher.

a system in which products were made rapidly by machines

b: the establishment clause  

b: socialism