Some universities provide programmes in English for foreign students. Do bear in mind that higher education in Sweden is no longer free of charge. Swedish and other EU nationals don't have to pay, but non-EU national now have to pay tuition fees.
People in general speak English, but it's always a good idea to take Swedish lessons if possible as an extracurricular activity. The weather is cold or bitterly cold in winter, OK in summer. Living in Sweden is expensive.
Apart from tuition fees, you need guaranteed disposable funds of about SEK 7,500/month just to get a student visa. You'll find all sorts of info about studying in Sweden on the "Study in Sweden" website. Link below.
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.