The answer is B. The only explanation I can give is that A and C are wrong because the legislative, judicial, and executive branches all share power. As far as D goes, the states' own laws don't really affect each other so there is no need for the power to be shared among them. Anything outside of the state becomes federal.
<span>Germany had to make "reparations payments" to cover the costs of world war 1, and it was these payments that further cripple the Germany economy and helped lead to the outbreak of World War II. </span>
The Senate refused to ratify the treaty of Versailles primarily because they objected to the League of Nations. If the US joined the League, then they would be obligated to fight in future wars and the Senate didn't want that.
<span>It was an era of new Roman Christian states. By 966, much of the Polish region had sided with Rome, as did the of Hungary around 986. Large sections of </span>Scandinavia adopted the Latin Church by 1000. Pagan lands were minimal.
It was the "never surrender" mentality of the Japanese army. The thought was of dealing with a million or 2 million US lives to invade Japan. The use of the atomic weapon was to save lives.