Hi Bianca Your English appears to be excellent. Keep up your fluency. That is a great asset to an employer.
Here is a list of critical skills issued by the US FBI. You will note that the three majors you proposed are not on that list at all. Accounting Finance Computer Science/Information Technology Expertise Engineering Expertise Foreign Language(s) Proficiency Intelligence Experience Law Experience Law Enforcement or Other Investigative Experience Military Experience Physical Sciences Expertise Your statement: "But I want to be a homicide detective and for that I need a major in criminology, sociology and psychology." - Says who?
You may have a completely subjective path in mind that does not reflect the reality of law enforcement. Hope that this helps and gives you some useful ideas.
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.