What is the essential difference between qualitative and quantitative research?

Qualitative you are assessing characteristics or behavior, what will make people buy. Whereas quantitative is about the number of things that are being bought.

Qualitative data deals with descriptions so data can be observed but not measured whereas quantitative deals with numbers. So this data can be measured. Qualitative data sometimes depends on personal point of view while quantitative data is free of personal bias.

But both of these data can be transformed to each other for sure through survey,observation,consumption,experiment etc.

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.