Date of admissionSept. 9, 1850
California was part of the northern portion of Mexico that was added to the US as a result of the Mexican-American War.
N+10
It added California and the Southwest.
The Mexican-American War of 1846 to 1848.
california
California was added to the United States just before the US Civil War and allied with the Union side.
James K. Polk
California was added to the United States on September 9, 1850. This made the state the 39th in the US.
People born in US territories become citizens of the US. When the US western border stretched from the Mississippi River to the California coast, new Americans born in those territories added to the "citizen population".
It added the lands , through the Treaty of Guadalupe Hidalgo , that became Arizona, California, Nevada, Utah and New Mexico. It also added Texas, remember the Alamo?
Florida was added to the US as a result of this treaty. Spain also dropped claims on Oregon but kept California and Texas.
Florida was added to the US as a result of this treaty. Spain also dropped claims on Oregon but kept California and Texas.