What, then, was the role of slavery in the Texas Revolution? Circumstantial evidence supports the abolitionists’ contention that slavery was the primary cause of the conflict. Anglo-American settlers wanted their Peculiar Institution, and Mexico opposed it, at least in principle. Once they were independent, Texans made no pretense of hiding their determination to guarantee slavery in their new republic. They outlawed the African trade, but that was primarily a response to world opinion rather than an action against slavery. The introduction of slaves from the United States was guaranteed. Given these results, slavery appears to have been a major cause of the revolution.
The difficulty with this interpretation, however, is the lack of direct supporting evidence. Slavery did not play a major role in the developments from the passage of the anti-immigration Law of April 6, 1830, until the outbreak of fighting in the fall of 1835. The institution was not a primary issue in the disturbances of 1832 or the events of late 1835, and Mexico took no action threatening it directly or immediately during these years. Instead, the immediate cause of conflict was the political instability of Mexico and the implications of Santa Anna’s centralist regime for Texas. Mexico forced the issue in 1835, not over slavery, but over customs duties and the generally defiant attitude of Anglo-Americans in Texas.
This, of course, is not to say that slavery was unimportant in the Texas Revolution. In the broadest sense, the conflict resulted from a clash of cultural traditions. Anglo-Americans were simply too different from Hispanic-Americans to accept Mexican government indefinitely. One of those differences was slavery. The institution was always there, never too far in the background, as what the noted Texas historian Eugene C. Barker called a “dull, organic ache.” It was, therefore, an underlying cause of the struggle that began in 1835. Once the revolution came, slavery was an immediate concern. Texans worried constantly about the servile insurrection they accused the Mexicans of trying to foment, and Mexican leaders indicated that slavery would be one of the casualties in their conquest of the rebels. The war did disturb slavery and give some bondsmen the opportunity to escape. After San Jacinto, however, the institution became more secure than it had ever been in Texas. Protecting slavery was  not the primary cause of the Texas Revolution, but it certainly was a major result.Samuel Harmon Lowrie, Culture Conflict in Texas, 1821-1835 (New York, 1932), 59-60, 179-81; Barker, Mexico and Texas, 86. On Texans’ fears concerning slavery, see Eugene C. Barker, “Public Opinion in Texas Preceding the Revolution,” in Annual Report of the American Historical Association for the Year 1911 (Washington, D.C., 1913), 219. Mexico did indeed end slavery in 1837. See Josefina Zoraida Vázquez, “The Texas Question in Mexican Politics, 1836-1845,” Southwestern Historical Quarterly, LXXXXIX (1986), 317. Paul D. Lack, “Slavery and the Texas Revolution,” Southwestern Historical Quarterly LXXXXIX (1985), 181-202, is the most recent review of the subject of this chapter. Lack places somewhat greater emphasis on slavery as a cause of the revolution and on the efforts of slaves to use the crisis to obtain freedom, but there is no fundamental difference between his article and the views presented here.
Randolph B. Campbell,
Baton Rouge: Louisiana State University Press., 48ff.