https://www.tsl.state.tx.us/ref/abouttx/annexation/march1845.html
However, it should be noted that this provision was more or less redundant, as any state can be split into two or more states by action of its legislature and Congress.
Article IV, Section 3: "New states may be admitted by the Congress into this union; but no new states shall be formed or erected within the jurisdiction of any other state; nor any state be formed by the junction of two or more states, or parts of states, without the consent of the legislatures of the states concerned as well as of the Congress."
The only difference I can see is that TX can split itself without congressional approval. But then the new states would still have to petition for entry into the Union.
I see this is in the 1845 Texas Constitution.
What about the 1876 Constitution, the one enacted for re-admission to the Union.
That is the current constitution, so, does the 1876 Constitution have that same language? I can’t find it.
Appreciate the assist.
Well, there’s the answer.
Draw circles around Dallas, Houston, San Antonio, and Austin. Austin, as the capital, gets to be the “State of Texas.” Dallas, Houston, and San Antonio are their own new states and can petition the Union for entry.
Everything outside of those four circles is a new state, which refuses to petition the Union for entry. Republic of Texas ... or whatever.
Then the answer is clear: split into separate states, but don't apply for entry into the Union. Thereby having a defacto succession.