B) Sam Houston
Sam Houston (1793-1863), as an American soldier and politician, was the one in charge of leading the Texas militia to the battle of San Jacinto (April 21, 1836) and gaining the victory, even though their army was almost half the size of the Mexican's army led by General Antonio Lopez de Santa Anna. The Texans took as prisoners hundreds of Mexicans including, Santa Ana, which in exchange of his freedom, he signed a treaty recognizing Texas’ independence.
After the triumph, Houston was elected as the first President of Texas.