Ireland
through most of 17th c. the main settlers came from England with Wales and Scotland, Irish started to settle in the late 17th c.
Agriculture was the topic
In the 1850's Northern sympathies with the South eroded over the issue of slavery. The Democratic Party split into Northern and Southern factions, permitting Lincoln's Republican party to gain control of Congress and the White House in 1860. The South realized they no longer had allies in control of the Federal Government.
:)