I believe the answer is D. WWI was the first "total war," in which all of the people in all of the involved countries participated and were impacted.
The movable type printing press.
1. The idea of America expanded from the Atlantic Ocean to the Pacific Ocean is known as Manifest Destiny. This idea shaped the federal governments policy for almost the entire 19th century.
2. The Kansas-Nebraska Act was a law that allowed citizens to vote on slavery. This was introduced by Stephen Douglas .
3. Runaway slaves were brought back to their owners thanks to the Fugitive slave law.
4. The Dred Scott case concluded that slaves were not people, they were property. The lead judge in the case was Roger Taney .
5. Uncle Tom's Cabin was a famous book written by Harriet Beecher Stowe.
6. Robert E. Lee was the person who captured John Brown.
7. Frederick Douglass was a leading abolitionist in American society.
The answer is the ottoman Empire.