D. He ordered the imprisonment or execution of anybody suspected
of opposing his rule.
Explanation:
Vladimir Lenin's was the President and was scared of Joseph Stalin being his successor because he was very scared he would misuse the power if given to him. This actually came to pass as Joseph Stalin employed some tactics in being the leader of the party and got to power . He became a dictator and he ordered the imprisonment or execution of anybody suspected of opposing his rule including his party members.
The introduction of Buddhism meant importing not only religion, but also an advanced Chinese culture. Buddhism was transmitted through the Koguryo, Paekche and Silla kingdoms.
The livestock industry, agricultural tools, dams and private property were developed.
The bone or hereditary range was developed, instead of the Chinese bruocracy.
The Korean monks learned about the construction of temples, such as the temple of the imperial dragon.