They forced nations to go to war I think.
The use of new basic materials.
This is the right one
<span>c.
hydroelectric power.</span>
Answer:
A country's foreign policy, also called foreign relations or foreign affairs policy, consists of self-interest strategies chosen by the state to safeguard its national interests and to achieve goals within its international relations milieu. The approaches are strategically employed to interact with other countries.
Explanation: