History of slavery in Texas

The history of slavery in Texas began slowly at first during the first few phases in Texas' history. Texas was a colonial territory, then part of Mexico, later Republic in 1836, and U.S. state in 1845. The use of slavery expanded in the mid-nineteenth century as White American settlers, primarily from the Southeastern United States, crossed the Sabine River and brought enslaved people with them. Slavery was present in Spanish America and Mexico prior to the arrival of American settlers, but it was not highly developed, and the Spanish did not rely on it for labor during their years in Spanish Texas.

The issue of slavery became a source of contention between the Anglo-American settlers and Spanish governors. The governors feared the growth in the Anglo-American population in Texas, and for various reasons, by the early 19th century, they and their superiors in Mexico City disapproved of expanding slavery. In 1829 the Guerrero decree conditionally abolished slavery throughout Mexican territories. It was a decision that increased tensions with slave-holders among the Anglo-Americans.

After the Texas Revolution ended in 1836, the Constitution of the Republic of Texas made slavery legal. Sam Houston made illegal importation from Mexico a crime in 1836. The General Provisions of the Constitution forbade any owner of enslaved people from freeing them without the consent of Congress and forbade Congress from making any law that restricted the slave trade or emancipating slaves.

Americans of European extraction and enslaved people contributed greatly to the population growth in the Republic and State of Texas. Settlements grew and developed more land under cultivation in cotton and other commodities. The cotton industry flourished in East Texas, where enslaved labor became most widely used. The central part of the state was dominated by subsistence farmers. Free and runaway blacks had great difficulty finding jobs in Texas. Many worked in other parts of the state as cowboys herding cattle or migrated for better opportunities in the Midwest, California, or southward to Mexico.