Today in History, December 29, 1845:
The United States annexes the Republic of Texas, the only US state to have been an independent nation.
The Republic had gained quite a bit of debt in it’s short life, and part of the bargain was for the Republic to relinquish parts of modern day Oklahoma, New Mexico, Colorado and Wyoming to the US in exchange for ten million dollars in bonds.
As a sovereign nation, the new state of Texas gained rights most other territories and states did not, which is why Texas has profited from her oil rights on land and off her shores.