US Map
The sample screen deals with the Missouri Compromise of 1820. The
Compromise allowed Missouri to enter as a slave state, Maine as a free
state, and banned slavery in territories north of 36°30' latitude.
The Compromise was passed in the House of Representatives by two key
votes, one of which, shown here, allowed Missouri to enter as a slave
state, the other banned slavery in the territories. Two votes were used
as a device which allowed strong partisans of abolition and strong
partisans of slavery to express their views, with
"moderates" providing the critical votes for passage of both measures.
This screen shows the cross-tab of the two votes on the Missouri
Compromise. Yellow districts voted anti-slavery on both votes, green
districts pro-slavery. Districts shown in red provided the pro-slavery
on admission of Missouri, anti-slavery on slavery in new territories
votes necessary to the Compromise. Blue districts voted in a
contradictory manner, anti-slavery on Missouri but pro-slavery on the
territories. Other districts either voted on at most one of the two roll
calls or had no representation in the 19th Congress.
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