On February 2, 1848 by the means of the Guadalupe-Hidalgo Treaty, ending the Mexican-American War (1846-1848).
1848
Mexico gained independence in the year of 1821.
In the Mexican Cession of the Treaty of Guadalupe Hidalgo which ended the Mexican American War.
1519
At the Fall of Tenochtitlan, on August 13, 1521 Mexico became an overseas territory of the Spanish Empire.
Saint Helena is still a British Overseas Territory.
when mexico pooped on the us territory
The Mexican Cession was acquired in 1848 at the Treaty of Guadalupe Hidalgo.
First, America annexed the Republic of Texas, after it had won its independence from Mexico. Then, after Mexico refused to sell what is now the southwest of the United Stages, America sent troops to disputed territory, prompting military retaliation from Mexico, causing the Mexican War. After forcing Mexico's surrender, the US then paid half of its original offer for the territories of New Mexico, Arizona, Utah, Colorado, Wyoming, Nevada, and California. Within a year, the California Gold Rush began.
The Territory of New Mexico became the 48th state in 1912.
It was discovered in 1542 and was integrated into the territories of the Viceroyalty of the New Spain (as Mexico was formerly known when it was a colony of Spain). When Mexico won its war of independence against Spain in 1821, California also became part of Mexico on that date and continued to be a territory of Mexico until the Mexican-American War. At the end of such conflict in 1848, the Treaty of Guadalupe-Hidalgo ceded such territories to the US.So, you can say California belonged to the entity that eventually became Mexico for 306 years since its discovery until its cession, or you can say it belonged to the modern country of Mexico for only 27 years.
Mexico declared war with America bc Mexico helped Texas gain their out nation but then came the annexation of texas