Do I need a new operating system and hard drive if I buy a new motherboard and cpu?

Depends on your current operating system. Typically, when you change a major component like a motherboard and you try to boot up a hard drive with an existing copy of , say, Windows 7 or above, it will deactivate. If you're using a retail/boxed copy of Windows, this isn't a big deal.

You just go through whatever steps it gives you to reactivate it. If you have an OEM version of Windows (It will specifically say OEM or "system builder" on it), it's technically tied to the computer it was installed on, usually the motherboard, and it may not allow you to reactivate.

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.