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President John Tyler signed the Congressional Resolution to the Annex.
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President James Polk sends Sidel to Mexico, to try to buy California and New Mexico. President Herrera refused to meet Sidel to negotiate.
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The US army was sent passed the Rio Grande into the disputed territory,
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Taylor sent a letter to Polk, who asked Congress to Declare War.
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Kearny arrives in California and fights against the Californios at San Pasqual.
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In the battle of Mexico, the Mexicans had no reinforcements and were forced to surrender to the US.
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The treaty to end the war was signed and sent quickly to Washington.