According to this map published in 1812, The US claimed Texas as part of the Louisiana purchase.
Now OTL the US gave up the claim in the The Adams-Onís Treaty of 1819, when whe accepted a boundary along the Sabine River in Texas.
But WI
In 1819 the US had pushed a little more, and been willing to pay a bit more.
POD: Spain looking at losing Mexico, decided to go for the Cash, After all most of he Rebels were in the North in The Tejas area.
So in 1820 the money is paid and the US reaches to the Rio Grande and the Continental Divide.
So No Alamo, No Houston, No Republic of Texas, No Mexican war of 1848,
?What happens next? And ?What do Texicans find to Brag About in TTL.?
