The general consensus is that the Battle of Palmito Ranch was fought over a stockpile of cotton, which was bound to fetch a pretty penny at market.
The defeated Confederates decided to go for gold before having to surrender and end their racist war.
On May 11, 1846, President James Polk updated Congress on recent events concerning Texas. The emissary he sent to Mexico with an offer of cash in exchange for disputed lands was rudely rebuffed. Then, Mexicans opened fire on Americans at the Rio Grande River, killing 16. "War exists," Polk declared.
It a because it is way simpler than b and c
Well you have to read it carefully and see if the passage says something about that?