In this Grade 5 lesson from California myWorld Interactive, Chapter 8, students explore how American settlers moved into Mexican-held Texas in the 1820s and examine the causes and early battles of the Texas Revolution, including the Battle of the Alamo. Students learn key vocabulary such as vaquero, annex, and Manifest Destiny while analyzing the costs and benefits of achieving independence and statehood for Texas and California. The lesson uses primary sources like "America the Beautiful" to illustrate the frontier spirit that drove westward expansion.
Section 1
Americans Settle in Mexican Texas
After gaining independence, Mexico invited people from the United States to live in its northern territory. This land, known as Mexican Texas, was offered to new arrivals for very low prices. Mexico hoped this would help populate and develop the region.
Thousands of American settlers accepted the offer and moved to Texas. They brought their own language, customs, and ideas about government, which were often different from Mexican traditions.
Section 2
The Texas Revolution and the Republic of Texas
American settlers in Mexican Texas had different rules and ways of life than the Mexican government wanted. They disagreed on issues like slavery and religion. These disagreements grew into serious problems between the settlers and the government.
The settlers decided to fight for their freedom. They fought against the Mexican army in famous battles, including the one at the Alamo.
Section 3
Manifest Destiny and the Start of the Mexican-American War
Many Americans in the 1840s believed in Manifest Destiny, the idea that their country was meant to expand west to the Pacific Ocean. President James K. Polk strongly supported this goal. He wanted the United States to gain more land, including Texas and California.
In 1845, the United States annexed Texas. This angered Mexico, and the two countries soon disagreed over the official border. This border dispute, along with the U.S. desire for California, sparked the Mexican-American War in 1846.
Section 4
The U.S. Gains California and the Southwest
During the war, American settlers in California rebelled against Mexico. In the Bear Flag Revolt, they declared independence. U.S. forces soon arrived and secured California for the United States.
The war ended with the Treaty of Guadalupe Hidalgo in 1848. In the treaty, Mexico gave the United States a vast territory that included modern-day California, Nevada, and Utah.
Expand to review the lesson summary and core properties.
Section 1
Americans Settle in Mexican Texas
After gaining independence, Mexico invited people from the United States to live in its northern territory. This land, known as Mexican Texas, was offered to new arrivals for very low prices. Mexico hoped this would help populate and develop the region.
Thousands of American settlers accepted the offer and moved to Texas. They brought their own language, customs, and ideas about government, which were often different from Mexican traditions.
Section 2
The Texas Revolution and the Republic of Texas
American settlers in Mexican Texas had different rules and ways of life than the Mexican government wanted. They disagreed on issues like slavery and religion. These disagreements grew into serious problems between the settlers and the government.
The settlers decided to fight for their freedom. They fought against the Mexican army in famous battles, including the one at the Alamo.
Section 3
Manifest Destiny and the Start of the Mexican-American War
Many Americans in the 1840s believed in Manifest Destiny, the idea that their country was meant to expand west to the Pacific Ocean. President James K. Polk strongly supported this goal. He wanted the United States to gain more land, including Texas and California.
In 1845, the United States annexed Texas. This angered Mexico, and the two countries soon disagreed over the official border. This border dispute, along with the U.S. desire for California, sparked the Mexican-American War in 1846.
Section 4
The U.S. Gains California and the Southwest
During the war, American settlers in California rebelled against Mexico. In the Bear Flag Revolt, they declared independence. U.S. forces soon arrived and secured California for the United States.
The war ended with the Treaty of Guadalupe Hidalgo in 1848. In the treaty, Mexico gave the United States a vast territory that included modern-day California, Nevada, and Utah.