Greece but sorry if thats not what you mean.
Answer:
Pretty sure it is A
Explanation:
Both the USSR and the Chinese wanted to collectivize industry and rapidly industrialize. They aslo both lead to unintended consuquences such as famine.
Answer:
I think it's C, but I'm not 100% sure
It entails being out of touch with reality, where your optimism isn't grounded in comparison to the situation you're in.
For example, imagine climbing Mount Everest and you underestimate the weather, which are underestimating obstacles and risks.