Answer:
<u><em>Maintaining international peace and security. </em></u>
Explanation:
<u><em>Like the UN as a whole, the Security Council was created after World War II to address the failings of the League of Nations in maintaining world peace. ... These were the great powers, or their successor states, that were the victors of World War II.</em></u>
<u><em>Or</em></u>
<u><em>The UN Charter gives the Security Council primary responsibility for maintaining international peace and security. The Council may convene at any time, whenever peace is threatened.</em></u>
They did not created reasonable scheduling expectations
Answer:
Introduction of Western Hemisphere crops
Explanation: hope this helps
Using irrigation system was the practice closely associated with most ancient river valley civilization.
