In the four year period following world war 2, the united states was the only country in possession of atomic bombs. what was the impact of the testing and explosion of the atomic bomb by the soviet union in 1949?

The tomb of qin shihuangdi could be compared to what? a pharaohs tomb a christian coffin tomb of the unknown soldier a labyrinth

The 20th amendment, also called the lame duck amendment, decreased the amount of time between the presidential election and the inaugration of the new president. what are the advancements that allowed for this amendment?

Who was the first explorer to sail all the way down the mississippi river