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Election that resulted in Thomas Jefferson becoming president. Marked the first peaceful transition of power between different political parties.
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The Purchase of land west of the Mississippi River that doubled the size of the US. Purchased by Jefferson from Napoleon for 15 million dollars. Led Jefferson to moral dilemmas over whether it was in the president's power to purchase territory.
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Journey commissioned by congress under Jefferson that allowed Merriwether Lewis and William Clark to explore the land west of the Mississippi river to the west coast. Allowed for better charting and mapping of the west.