The U.S.-Mexican War of 1846-1848 was one of the most consequential conflicts in North American history, reshaping the borders of two nations and setting the stage for decades of change. This informative book examines the causes, key battles, and lasting impact of this pivotal war, with a special focus on the annexation of Texas and its role in sparking the conflict.

Students will learn how Texas's independence from Mexico in 1836 and its subsequent annexation by the United States in 1845 created tensions that ultimately led to war. The book covers major battles, important leaders on both sides, and the Treaty of Guadalupe Hidalgo, which transferred vast territories including California, New Mexico, and Arizona from Mexico to the United States.

Aligned with social studies and history curricula, this book features clear explanations, engaging narratives, and curriculum connections that help students understand how the U.S.-Mexican War shaped the modern map of North America. A comprehensive glossary and discussion questions support deeper learning and classroom discussion.