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.
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.
It’s on google
The best option from the list would be that "Horace Mann" is best associated with education reform in the U.S., since he sought to reform the system before "reform" in the realm of education was popular.
<span>the middle united states has more rapid changes in temperature than the western united states.</span>
