Is Zimbabwe a cursed country?
Are you referring to a certain aspect of Zimbabwe's history? I am not clear on how to answer this question, other than to say that the history of any civilization has proven that human behavior can either be highly benevolent or degenerate - man is free to choose, and both have consequences. Other than unforeseen forces, these decisions will impact a civilization and move it forward in one way or another.
Yes, it's cursed because of bad economic policies. If the country opens up to foreign investment like South Africa, Botswana and Namibia, the curse will be lifted.
Nationalism is killing Zimbabwe just like Nazi Nationalism killed Hilter's Germany.