The correct answer is <span>The need for natural resources and new markets
Imperialism is the idea that the United States actually should expand beyond its borders, which it did when it went westwards or when it took the Philippines. Being isolated is also against the idea of imperialism, while immigration is not as related to the idea. The only thing here is the need for resources and new markets which is a part of imperialism.</span>
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.
