The war to which the question refers was the Texas Revolution.
Explanation:
The Texas Revolution was fought from October 2, 1835 and April 21, 1836 between Mexico and Texas in the Mexican state of Coahuila y Tejas.
The revolution was triggered by the president of Mexico in 1835 rejecting the previous constitution of 1824 and proclaiming a new one of 1835, which was more anti-federalist. Riots erupted throughout Mexico. The result of the fighting in the Texas area was the proclamation of a new state: the Republic of Texas.
