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1 | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) How did changes in the economy during the 1850s impact the growing sectional conflict? |
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2 | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) Why did immigration become such a significant political issue during this period? How, if at all, did political leaders resolve this issue? |
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3 | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) Why did the second party system collapse during the 1850s? What emerged in its place? |
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4 | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) How and why did the Republican party succeed as quickly as it did? |
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5 | ![](/olcweb/styles/shared/spacer.gif) | ![](/olcweb/styles/shared/spacer.gif) What ultimately caused the southern states to secede? What caused the southern attack on Fort Sumter? |
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