How is religious life different in South Korea and China?

What is the main idea of this excerpt? 1.1.3

Brainliesttt !me : ) how did the japanese economy recover so quickly after world war ii? mass immigration to japan in an effort to rebuild economic and educational reforms passed by the government an economic partnership with korea and china marshall plan dollars stimulated the japanese economy

Which events are correlated but do not necessarily have a causal relationship?