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Candian rebellion and caroline incident
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Arrostook War breaks out over maine boundary
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Antislavery liberty party organized
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Harrison dies after four weeks in office and tyler assumes presidenancy
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Webster -Ashbuton treaty
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Polk defeats clay in manifest destiny election
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The United States annexes Texas
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Walker Tariff/Independent treasury restored to the U.S. settles Oregon dispute with Britain. Mexico and the U.S> clash over Texas boundary. Fremont conquers California.Wilmt Proviso passes for the House of representives
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Disputes over polk wanting California
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Battle of Buena Vista.
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Treat of Guadalupe Hidalgo