We know this by dating the structures, evidence of life there long before anywhere else and by the Bible. You can also look into other sources of history too. There is a ton of info on Egypt provided by scrolls a old writing on stone tablets.
Answer:All of them
Explanation:
I answered it on Ed Corse and got it right
Answer: a. Social issues
A photojournalist is a visual storyteller whose main roles are to photograph, edit, and present images in a way that their artworks tell people a story. He must be able to set up the photo for top quality, edit it without trace that it was changed, and upload it on the Internet for publication.
His subjects vary greatly, but he usually concentrates on social issues.