A look back on 20th Century Literature (Pre-WW2)

Looking back on the books that we have read for our group i have this to say; some of the books seem very modern. I am referring to Tarzan Of The Apes and Of Mice and Men. Both are easier reads so that's why i think these seem to have been the easiest to understand. Other books in this time frame that i disliked mainly because they seem out of date. As I Lay Dying almost makes me think the guy was drugs when he wrote the book adding in weird stuff (like the abortion part which were very uncommon in that time frame). The part about when of the sons comparing the dead fish to his mother just simply creeps me out and the stream of conscious writing style is simply hard to understand.
All of the books have been made into films some have many versions such as Tarzan where the latest movie released about it was by Disney in 1999. The majority of the books have also been turned into theatre productions as well.
Overall i did not like this era of literature, the majority of the stories tend to about country life as opposed to taking place in the city. Some of these books i may read again but the majority no as they are out of my time frame for me to fully understand maybe if I had lived in that time frame i could fully understand.

Side note: i do not take any credit for the map below, it is neat if you can work it but its hard to understand/operate