How does this image of an American flag being placed at Iwo Jima after the most infamous battle in the Pacific during WWII, use symbolism to commemorate, document, and narrate an event in history?

Photography has changed its subject matter quite a lot over the past few years. in the 1800's, it was considered normal for families to have  post mortem photos of their loved ones, and now that would be completely unacceptable. i think that photographers have always pushed boundaries and have been eager to capture everything, it is just society that changes their boundaries.

Well if some words are like big you could say enormous .just make them sound more egxarreted

Perhaps the changes well be new machines that can get the job done faster and same time, there is enough space to keep on building.