How does the case of Dred Scott impact Abraham Lincolns political career

How did thomas paine's pamphlet common sense convince reluctant americans to abandon the goal of reconciliation with britain and accept that separation from britain — independence — was the only option for preserving their liberty?

In italy, the distance between milan in the north and palermo,sicily, in the south is about 550 miles. in the united states, the distance betweenboston, massachusetts, and savannah, georgia, is about 900 miles. do you think the american revolutionaries of 1776 in the 13 colonies faced some of the same challenges as the patriots who struggled for italian unity in the 1860s?  

In keeping their culture unchanged what do canadians fear the most?