First off, the controversy of this had led to an imbalance in congress among the number of free states and slave states. So this rules out our first option. Due to it not being all of the above, that's our fourth answer ruled out as well. The Webster speech did not happen for 10 more years so it is very unlikely that this is what led to that speech. Even without the process of elimination, it would be B because the Missouri Compromise admitted Missouri as a slave state and Maine as a free state in order to preserve the balance of power in congress. Also, Henry Clay (the Great Compromiser) drafted this.
I think the right answer is C.(William Penn)
The completion of transcontinental railroads in the United States and Canada
The major reason why the Articles of Confederation were too "weak" was because they gave the central government no power to tax the individual states--meaning that the US could not repay its war debt.
<span>The political unification of northern India under one powerful government was the most significant feature of the Gupta Age. The Gupta power also extended its influence to the south. The unity of the country developed a spirit of oneness among the Indian people. Small boundaries of petty territories disappeared from the political map. As a result, people came under greater cohesion. The destruction of the foreign powers added further strength to Indian unity.</span>