Why is that many people don't know that the ancient Egyptians were black?

Biblical accounts are mythological, as are all accounts of extremely long-lived or "immortal" characters. Generally, people in preliterate cultures would not know how old they were with any precision. Even when cultures became semi-literate, most people would know at most that they were born in the th year of King Soandso's reign -- which would make it possible for a scholar to figure out their age, but it would not be a number that the person himself could come up with on a moment's notice.

Often there would be some general milestones which a person would share with people about the same age -- this would be like classifying yourself with your high school graduating class, and your precise age would not be an issue.

Most had no idea. In a mostly illiterate world, people had to rely on their memories which simply are not reliable. If you go and check out court records from the middle ages, you'll see lots of examples of them taking a best guess at people's ages based on their physical appearance and what events they recall.

We live in a precise world because we are literate and we generate tons of paperwork that can be cross checked to get precise dates. In the ancient world, only the handful of scribes around could generate records to be checked, so most people's birthdays could not be readily confirmed or assigned a definite date.

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.