First answer: National parks are sanctuaries in which some special types of species are present. The animals are not brought from some where else. They are naturally their in their own habitat.
Tourists from other countries use to visit their with some difficulties. In wild life sanctuary their are many type of species brought from many other places. Tourists use to visit their easily without any recommendation.
Biosphere reserve is a place for animals where they have been kept in cages. They are brought from many jungles. Toursts use to visit their with some difficulties.
Charges for tourists are more than that of Indians. More at web page.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.