Based on the following chart of nuclear weapons and nuclear weapons history of the “nuclear club”, what can you infer about the birth of nuclear weapons?

a) beginning in the 1940s, both the united states and the united kingdom lead the way in successfully testing nuclear weapons

b) beginning in the 1940s, both the united states and russia lead the way and successfully testing nuclear weapons

c) beginning in the 1940s, russia was the first country to successfully tess a nuclear warhead.

d) beginning in the 1940s, both the united states and china lead the way in successfully testing nuclear weapons.

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The answer is (B) beginning in the 1940s, both the United States and Russia lead the way and successfully testing nuclear weapons

U.S. conducted six atomic tests before Russia developed their very first atomic bomb (RDS-1) and tested it on the 29th of August, 1949. Testing these bombs back then for both countries were relatively infrequent because they did not have very many atomic bombs to spare. The Trinity was tested on the 16th of July 1945 and yielded around 20 kilotons. 

Trinity, which was conducted in New Mexico was tested to give an idea of the actual size and the after- effects of a nuclear explosion. Operation first lightning or the RDS-1 also known as Joe 1 in the west was tested on August 29th 1949 and considered this test as the first Soviet nuclear test.

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust. 

D. latin america followed by africa