The answer is D. the district of Columbia was closed to slavery.
Senator Henry Clay introduced a series of resolutions on January 29, 1850, in an attempt to seek a compromise and avert a crisis between North and south. As part of the Compromise of 1850, the Fugitive Slave Act was amended and the slave trade in Washington DC was abolished.
were two Italian men who were convicted of murder in the United States in 1920.
Because the Industrial Revolution increased the production capacity of Western states astronomically, there was an enormous hunger for raw materials to satisfy demands. Thus, Western powers sought colonies where raw materials were abundant and where they could be appropriated at little to no cost. Additionally, colonies gave the Western powers a ready-made market for their goods, as the colonized people were left with little to no legal recourse to produce their own finished products. Technological advances in Western arms and transportation commonly made indigenous resistance to imperial incursions futile and short-lived, as Westerners had far superior weapons, ammunition, strategy and tactics.
Additionally, technological advances made former threats to European settlement and survival in equatorial zones less daunting. For example, the development of the steamship eradicated the danger posed by the mouths of many African rivers. The steamship could simply be dissembled, brought inland and then reassembled for river travel, while wooden sailing ships previously could not. Similarly, industrial age advances in medicine brought quinine, a supplement that exponentially increased the survival rate of Western imperialists in malarial areas, acting as a preventative, though not a cure. Thus, Westerners could now worry much less about disease, whereas before quinine, severe fever and even death often came within weeks after arrival.
I believe that one of the main reasons was that the North had a more industrialized advantage. For example, the North had many factories and railroad systems which was scarce farther South where agriculture and farming dominated. Having these factories allowed manufacturing weapons and suplies much easier and quicker than than the South.
