The answer is A, the rest don’t really seem reasonable. And during the middle ages it was a time for great process in arts and SCIENCE! And the only one involving science is A :))
Two things that increased american interchanges in the late 1800s were "b. the telegraph and telephone," since both of these creations significantly accelerated correspondence and made it more productive.
Answer:
Your answer is 2. They thought that granting popular sovereignty would allow slavery.
Explanation:
The Popular Sovereignty clause in the Kansas-Nebraska Act meant the territories <em>might </em>allow slavery and enter the Union as slave states.
Florida & the could now use the Mississippi!!