The answer is Galileo, however, a scientist much earlier then Galaleo, named Anaxagoras also discover this. However, I believe credit is given to Galileo.
<span>There were a wide variety of reasons for why the army was near collapse in 1916, but essentially they had run out of crucial supplies such as ammunition and uniform, and were not able to acquire more due to allied control over Europe. The first world war had truly taken its toll on the Russian army.</span>
The people of western Europe needed a source of protection from many invading threats with order.
Douglas applied popular sovereignty to Kansas in the Kansas-Nebraska Act, which passed Congress in 1854. The Act had two unexpected results. By dropping the Missouri Compromise of 1820 (which said slavery would never be allowed in Kansas), it was a major boost for the expansion of slavery.
