I believe the answer is: International cooperation
International cooperation refers to the foreign policy that make a country open to mutually beneficial relationship to address a certain issue with other countries. Example of such cooperation would be united Nation's program to address pollution level in the world.
Answer:
A on the map
Explanation:
https://www.freeman-pedia.com/early-modern-600-ce-to-1450-ce
Answer:
to make the singer feel better by expressing sorrow in music.
Explanation:
on edge
This line of french fortifications on the german border was known as the Maginot Line. So the answer is C
