So I've been wondering what would've happened if Texas stayed in the Union. How it could've happened? I don't really know but maybe if Houston had the secession convention earlier and was able to sway enough delegates to vote no. I do think Texas would've tried to stay neutral but allow Union troops to pass through with some Union volunteer regiments. But their neutrality could easily have been violated by the confederacy. The Civil War would've ended sooner with a route from the west being available. With a powerful slave state like Texas staying in the Union would affect the Emancipation Proclamation and the 13th Amendment granting slave states that remained in the union reimbursements for emancipation. I'm sure Texas would've gotten some land but the extent of their gains I don't know. I made a couple of maps of possible Texas expansions. Now as a proud Texan i think we should've kept Santa Fe so the last one will most likely be the most questionable as I take any chance I get to see if Texas could've regained Santa Fe.
Disputed Territories
Disputed Territories + New Mexico Territory south of 34th parallel north and east of the Rio Grande
Disputer Territories + New Mexico Territory East of Rio Grande
Disputed Territories + New Mexico Territory south of 34th parallel north and east of the Rio Grande
Disputer Territories + New Mexico Territory East of Rio Grande