D: They sought a more hospitable climate :-)
Answer:
C
Explanation:
C. Germany's invasion of Poland
It would be important because the ways we are using now are not very affective
Prior to the outbreak of the Civil War, the election of 1860 increased sectional tensions of the United States by lifting pro-union, anti-slavery statesman, Abraham Lincoln into the Presidency. In reaction, the Southern States protested in many ways, but in no more dramatic way than, one by one, seceding.