<span>Passed by Congress on January 31, 1865, and ratified on December 6, 1865, the 13th amendment abolished slavery in the United States and provides that "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States</span>
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It points to the Texas Annexation. The Republic of Texas was admitted to the Union as the 28th state on December 29, 1845.
The Republic of Texas declared its independence from the Republic of Mexico in 1836. The majority of the Texian population agreed with the annexation of Texas by the United States. Those who opposed to the annexation were the Democrats and the Whigs, they wished to avoid war with Mexico, whose government refused to acknowledge the sovereignty of its rebellious northern province.