I'm very confused please help

Its D) Overcrowding and pollution

Explanation:

I can tell its not A because there would atleast or sign or two to protest. If you look at the picture, you see tightly packed people next to eachother and smoke in the distance. The picture is basically the opposite of today.

mesopotamian code of hammurabi

and i think its 1860 b.c. you mean lol

answer; /// i do believe that its napolean's conquest of spain;