One hundred fifty years ago, Mexico reacted angrily over immigration from the United States into the Mexican territory of Texas. An army under General Santa Anna slaughtered a small group of Americans in the Alamo. The Americans lost this battle, but eventually succeeded in making Texas a part of the United States. Series Information: Dramatic and defining moments in American history — from colonial times to the present day — come vividly to life in "Cornerstones of Freedom, Second Series." A natural extension of the acclaimed original series, the second series returns its focus to the United States with more of what middle-grade teachers and students are looking for to support history, social studies, and geography curricula.