The United States Gains California
The United States gained California through a combination of armed rebellion and war. In 1846, American settlers launched the Bear Flag Revolt, briefly declaring California an independent republic. Almost simultaneously, the U.S. declared war on Mexico, and California became a military possession. The 1848 Treaty of Guadalupe Hidalgo formally ended the Mexican-American War and transferred California and the Southwest to the United States in exchange for $15 million. This Grade 4 history topic from Social Studies Alive! California's Promise Chapter 5 explains how a major military and diplomatic event determined California's national future.
Key Concepts
Some American settlers in California grew unhappy with Mexican rule. In 1846, they started the Bear Flag Revolt and declared California an independent republic . They even created a new flag with a bear on it.
At the same time, the United States and Mexico were fighting a war. The U.S. won, and in 1848, the two countries signed the Treaty of Guadalupe Hidalgo . This agreement officially made California part of the United States.
Common Questions
How did the United States gain California?
The United States gained California primarily through the Mexican-American War (1846-1848). The Treaty of Guadalupe Hidalgo, signed in 1848, formally transferred California and a large portion of the Southwest from Mexico to the United States.
What was the Bear Flag Revolt?
The Bear Flag Revolt was a June 1846 uprising in which American settlers in California's Sacramento Valley captured a Mexican garrison and declared California an independent republic. They created a flag featuring a grizzly bear and the words 'California Republic.'
What was the Treaty of Guadalupe Hidalgo?
The Treaty of Guadalupe Hidalgo was the peace agreement that ended the Mexican-American War in 1848. Mexico surrendered California and the Southwest (present-day Arizona, Nevada, Utah, and New Mexico) to the United States in exchange for $15 million.
What was the Mexican-American War?
The Mexican-American War (1846-1848) was a conflict between the United States and Mexico triggered by a border dispute following the U.S. annexation of Texas. The U.S. won decisively, acquiring a vast territory including California.
Who were the Californios and what happened to their land rights?
Californios were Mexican families who had lived in California under Mexican rule. The Treaty of Guadalupe Hidalgo promised to protect their property rights, but new American land laws made it nearly impossible for Californios to defend their claims in court.
What grade covers how the U.S. gained California?
This topic is covered in 4th grade in Social Studies Alive! California's Promise, Chapter 5, which examines the Mexican-American War and California's transition from Mexican to American territory.
Why did the United States want California?
The United States wanted California for its Pacific coastline, its potential harbors for trade with Asia, its rich agricultural land, and the gold that would be discovered in 1848. It also fit the expansionist ideology of Manifest Destiny.