What do you need in order to be able to calculate the speed of an object

Explain in detail the events that led to the fall of the soviet union. explain the importance of the foreign policy shift from brinkmanship to détente during the cold war.be sure to include evidence to support your answer describe the challenges to nation-building that exist in africa today .

How did kenya gain its idpendence in 1963

How did china's location impact trade and its development?