Even Snopes agrees that it can be done.
Claim: A clause in the document annexing Texas to the United States allowed for Texas to be divided into five different states.
Status: True.
Congress on 1 March 1845, which included a provision allowing Texas to be sub-divided into up to four more states with slavery being banned in states carved out of Texas territory north of the Missouri Compromise line and left up to popular sovereignty in states formed south of the line.
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