Estado de Occidente ( en, Western State; also known as Sonora y Sinaloa) was a Mexican state established in 1824. The constitution was drafted in that year and the government was initially established with its capital at

El Fuerte, Sinaloa El Fuerte () is a city and El Fuerte Municipality its surrounding municipality in the northwestern Mexican state of Sinaloa. The city population reported in the 2010 census was 12,566 people. El Fuerte, meaning "The Fort", was named a Pueblo ...

. The first governor was Juan Miguel Riesgo. The state consisted of modern Sonora and Sinaloa, and also modern

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

more or less south of the Gila River (although in much of this area the

Yaqui The Yaqui, Hiaki, or Yoeme, are a Native American people of the southwest, who speak a Uto-Aztecan language. Their homelands include the Río Yaqui valley in Sonora, Mexico, and the area below the Gila River in Arizona, Southwestern United Sta ...

, Pima,

Apaches The Apache () are a group of culturally related Native American tribes in the Southwestern United States, which include the Chiricahua, Jicarilla, Lipan, Mescalero, Mimbreño, Ndendahe (Bedonkohe or Mogollon and Nednhi or Carrizaleño an ...

, and other native inhabitants in certain time did not recognize the rule of the state). The constitution was established in 1825 with one of its principles being the making of all inhabitants of the state citizens. This was resented by the Yaqui since they now had to pay taxes, which they had been exempt from before. The Yaqui also considered themselves possessed of sovereignty and territorial rights which were threatened by the state's new constitution. This led to a new outbreak of war between the Mexicans and the Yaquis (see

Yaqui Wars The Yaqui Wars, were a series of armed conflicts between New Spain, and its successor state, the Mexican Republic, against the Yaqui Natives. The period began in 1533 and lasted until 1929. The Yaqui Wars, along with the Caste War against the M ...

) with Juan Banderas as the leader of the Yaqui forces. As a result of this war the capital of Occidente was moved to Cosalá and later exactly in 1828 to

Álamos Álamos () is a town in Álamos Municipality in the Mexican state of Sonora, in northwestern Mexico. Historically an important center of silver mining, the town's economy is now dominated by the tourist sector. Designated a ''pueblo mágico ...

. Sonora and Sinaloa were again split into two separate states in 1830.

One state: Sonora y Sinaloa

Under its

Constitution of 1824 The Federal Constitution of the United Mexican States of 1824 ( es, Constitución Federal de los Estados Unidos Mexicanos de 1824) was enacted on October 4 of 1824, after the overthrow of the Mexican Empire of Agustin de Iturbide. In the new Fr ...

, Sonora y Sinaloa was a single state of the Mexican Republic. The federal constitution used the name "Sonora y Sinaloa." However the state constitution adopted on 31 October 1825 used the name Estado de Occidente. The Sonora y Sinaloa state capital was located at

. The first Governor of Sonora y Sinaloa was the Sonoran Juan Miguel Riesgo.

Two states: Sonora and Sinaloa

On 30 September 1830, due to constant internal disputes, the state was divided into two states: Sonora and Sinaloa. The territory of Sinaloa corresponds to that of the modern-day state of the same name.

Mexican-American War and territory

Sonora of the 1820s extended north beyond the present-day

United States–Mexico border United may refer to: Places * United, Pennsylvania, an unincorporated community * United, West Virginia, an unincorporated community Arts and entertainment Films * ''United'' (2003 film), a Norwegian film * ''United'' (2011 film), a BBC Two f ...

. Settlements existed only in the extreme south of the current state of Arizona and the northern frontier was not defined. Maps from the period show the northern border above today's international border, as far as either the Gila River or the

Colorado River The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid watershed that encompasses parts of seven U.S. s ...

in the Grand Canyon.

The Mexican-American War ''The'' () is a grammatical article in English, denoting persons or things already mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the m ...

, the 1848

Treaty of Guadalupe Hidalgo The Treaty of Guadalupe Hidalgo ( es, Tratado de Guadalupe Hidalgo), officially the Treaty of Peace, Friendship, Limits, and Settlement between the United States of America and the United Mexican States, is the peace treaty that was signed on 2 ...

, and especially the Gadsden Purchase established the present border.

Sources

*Spicer, Edward H. ''Cycles of Conquest''. Tucson: University of Arizona Press, 1962. {{coord missing, Mexico History of Sinaloa History of Sonora 1824 establishments in Mexico History of Mexico States and territories established in 1824 States and territories disestablished in 1830 Pre-statehood history of Arizona Former states of Mexico