Aurelius killed Christians, while Pius was good to his people and kept peace and this was the way Marcus Aurelius and Antoninus Pius differed from each other. The correct option among all the options that are given in the question is the third option. I hope this is the answer you were looking for and it has helped you.
Answer: imperialism was a huge factor as well as urbanization. the first world war was a big part too.
Explanation:
<u>Copper....................</u>
He kept asking for more land until the European nations realized what they had done.
