If countries don't buy as much land from other countries, there won't be as much disagreement over who should own what land. Countries could share the land to help prevent the war. When countries form alliances, more people will get involved in the war. Other countries that don't have alliances are angry at the countries that do.
Answer:
B. Tigris and Euphrates river valley
Explanation:
Cant be A Cant be B so it has to be (C.)
