In this lesson, students analyze primary source documents in an effort to answer the central historical question: Why did Texans declare independence from Mexico in 1836? The teacher introduces the topic with a film clip (Note: requires registration to Discovery Education’s website) and timeline and elicits student hypotheses. Students are then given 4 documents: 1) the Texas Declaration of Independence, 2) a letter by Tejano Rafael Manchola, 3) a speech by Mexican Juan Seguin, and 4) a pamphlet by abolitionist Benjamin Lundy. Students then analyze each using a graphic organizer; a final class discussion invites students to participate in the historical debate.