In this Grade 4 Pengi Social Studies lesson from Chapter 3, students explore how Mexico's independence triggered the secularization of California mission lands, transferring control from the Catholic Church to private ownership. Students examine the Land Grant system and learn how Diseños — hand-drawn maps — were used to define rancho boundaries. The lesson also guides students in analyzing the broader economic shift from religious to private land control during the Mexican Rancho era.
Section 1
Independence and Change
For many years, Spain ruled California. But in 1821, Mexico won its independence from Spain, making California part of the new Mexican Republic. The new government wanted to reduce the power of the Catholic Church.
They passed laws for secularization, which meant closing the missions. The church lost its control, and the vast mission lands were taken away to be used for private settlement. This marked the end of the mission era.
Section 2
Land Grants and Maps
The Mexican government gave away the old mission lands to encourage settlement. These large gifts of land were called land grants. To get land, a person had to be a Mexican citizen and draw a map called a diseño.
These hand-drawn maps used natural landmarks—like a large oak tree, a creek, or a pile of rocks—to define the boundaries of the property. Once approved, the new owners could start their own ranches.
Section 3
The Shift to Private Land
Secularization changed California's economy completely. Under Spain, the Catholic Church controlled the land, wealth, and labor through the missions.
Under Mexico, this power shifted to private families. These landowners, called Rancheros, took over the fertile valleys that the missions had once farmed. This created a new society based on private property and cattle raising, rather than religion.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter
Expand to review the lesson summary and core properties.
Section 1
Independence and Change
For many years, Spain ruled California. But in 1821, Mexico won its independence from Spain, making California part of the new Mexican Republic. The new government wanted to reduce the power of the Catholic Church.
They passed laws for secularization, which meant closing the missions. The church lost its control, and the vast mission lands were taken away to be used for private settlement. This marked the end of the mission era.
Section 2
Land Grants and Maps
The Mexican government gave away the old mission lands to encourage settlement. These large gifts of land were called land grants. To get land, a person had to be a Mexican citizen and draw a map called a diseño.
These hand-drawn maps used natural landmarks—like a large oak tree, a creek, or a pile of rocks—to define the boundaries of the property. Once approved, the new owners could start their own ranches.
Section 3
The Shift to Private Land
Secularization changed California's economy completely. Under Spain, the Catholic Church controlled the land, wealth, and labor through the missions.
Under Mexico, this power shifted to private families. These landowners, called Rancheros, took over the fertile valleys that the missions had once farmed. This created a new society based on private property and cattle raising, rather than religion.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter