B) Conquer new territory in Africa and Asia.
Answer:
The answer is C, Manifest Destiny
Explanation:
Manifest destiny was a widely held American imperialist cultural belief in the 19th-century United States that American settlers were destined to expand across North America.
When a country establishes foreign policies, the interest of the country itself (A) is the most prioritized interest in constructing foreign policy. This is logical given that a country creates a strategy for foreign policy and national security based upon representing their own peoples interests first.