The Treaty of Versailles ended World War I between Germany and the Allied Powers. Because Germany had lost the war, the treaty was very harsh against Germany. Germany was forced to "accept the responsibility" of the war damages suffered by the Allies.
The jewish financiers screwed over Germany after WW1 leading to Germans hatred of jews, Hitler than used that to climb to power. The crux of ww2 was caused by Germany because of the jews utterly bankrupting them, causing anger in the country. The main thing in ww2 was to stop Germany and its allies from breeding a pure race in an imperfect world
D. The Kansas-Nebraska Act states that slaves were only allowed in the states below a certain point. And that the number of slave states and free states must remain equal.