The primary goal of the United Nations is to promote peace and unity among nations, and by this to prevent World Wars ( and other wars) in the future. The UN establishes and helps maintain friendly relations between countries.
Another aim of the UN is to protect human rights worldwide.
Explanation:
through the teaching of our elders,enlightment of the materials but i suggest that tou should check on goggle for proper explanation
B. Cuban. It was the Cuban missile crisis
1, Comparing the composition of the crust to other bodies in the solar system
2. By studying things from Earths layers that have been pushed up through the cracks of the crust.
3.By measuring diffrent kinds of vibration from earthquakes
3.By doing laboratory expirements
I HOPE THIS HELPS YOUU!!!!!