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A belief that the U.S should expand across North America. This is important because it was used to justify US expansion.
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A war between the US and Mexican. This is important because it allowed the US to expand in territory.
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A rush of people trying to find gold and migrated to the west. This is important because it caused a mass migration.
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A short lived political party. This is important because they opposed the expansion of slavery.
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A package of bills trying to settle tensions between slave states and free states. This is important because it decided the status of newly acquired states.
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A law regarding runaway slaves. This is important because it was a compromise over slavery.
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A proposal to change foreign policy to try and seize Cuba. This is important because it brought up debates about the role of the US internationally.
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A purchase that gave the US more territory. This is important because it was used to help build the transcontinental railroad.
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A treaty between the US and Japan. This is important because it opened up limited trade between the nations.
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An act that created Kansas and Nebraska. This is important because it mandated popular sovereignty.
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A massacre involving slavery by John Brown and a band of abolitionists. This is important because it brought about debates over slavery.
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A panic caused by a failing international economy. This is important because it was the first worldwide economic crisis.
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A proposition in the constitution of Kansas, it wanted to keep slavery. This is important because it shows the push of some groups to keep slavery.
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A law that raised tariffs. This is important because it encouraged domestic industry.
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A series of laws that allowed people to get property belonging to the government or in public domain. This is important because it facilitated westward expansion.
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Laws that tried to promote the construction of the transcontinental railroad. This is important because it would allow for easier transportation and economic opportunities.
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A law creating land-grant colleges. This is important because it opened the door for people to learn new skills.
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A law defining citizenship and protecting citizens. This is important because it tried to protect the citizens of the US
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A financial crisis causing a depression. This is important because it shows the effects of over industry.
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A law giving African-Americans more rights. This is important because it tried to promote equality.
