Why Saving the children story told until 50 years later?

It wasn't told until 50 years later because he did not want to get caught at the time for helping many jews escape. And many people don't care about all that stuff. But Sir Nicholas Winton(The man who saved those people) knew deep down inside that he had done something good whether people needed to know or not.

Explanation:

answer; ///i believe that the correct answer is (a); ///the crystal will

ok sorry the answer is a. by their religion