Cry of Dolores in the context of Pronunciamiento

The Bajío (the Lowlands) is a cultural and geographical region within the central Mexican plateau which roughly spans from northwest of Mexico City to the main silver mines in the northern-central part of the country. This includes (from south to north) the states of Querétaro, Guanajuato, parts of Jalisco (Centro, Los Altos de Jalisco), Aguascalientes and parts of Zacatecas, San Luis Potosí and Michoacán.

Located at the border between Mesoamerica and Aridoamerica, El Bajío saw relatively few permanent settlements and big civilizations during Pre-Columbian history, being mostly inhabited by the Otomi and semi-nomadic tribes known to the Aztecs as the "Chichimeca" peoples (poorly attested conglomerate of Uto-Nahua groups, from whom the Toltec and the Aztecs were probably descended). The tribes that inhabited the Bajío proved to be some of the hardest to conquer for the Spanish—peace was ultimately achieved via truce and negotiation—but due to its strategic location in the Silver Route, it also drew prominent attention from Europe, and some of the flagship Mexican colonial cities were built there, such as Zacatecas and Guanajuato. Abundant mineral wealth and favorable farming conditions would soon turn the region into the wealthiest of New Spain. At the beginning of the 19th century, El Bajío was also the place of the ignition of the Mexican War of Independence, and saw most of its battles during the initial phase of the war, including the Cry of Dolores, the storming of the Alhóndiga de Granaditas and the Battle of Calderón Bridge.

Don Miguel Gregorio Antonio Ignacio Hidalgo y Costilla Gallaga Mandarte y Villaseñor (8 May 1753 – 30 July 1811), commonly known as Miguel Hidalgo y Costilla or simply Miguel Hidalgo (Spanish: [miˈɣel iˈðalɣo]), was a Mexican Catholic priest and prominent leader of the Mexican War of Independence, who is recognized as the Father of the Nation.

A professor at the Colegio de San Nicolás Obispo in Valladolid, Hidalgo was influenced by Enlightenment ideas, which contributed to his ouster in 1792. He served in a church in Colima and then in Dolores. After his arrival, he was shocked by the rich soil he had found. He tried to help the poor by showing them how to grow olives and grapes, but in New Spain (modern Mexico) growing these crops was discouraged or prohibited by colonial authorities to prevent competition with imports from Spain. On 16 September 1810, he gave the Cry of Dolores, a speech calling upon the people to protect the interest of King Ferdinand VII, held captive as part of the Peninsular War, by revolting against the peninsulares who had overthrown Viceroy José de Iturrigaray.

José María Teclo Morelos Pérez y Pavón (Spanish: [xosemaˈɾi.a ˈteklo moˈɾelos ˈpeɾes i paˈβon] ; 30 September 1765 – 22 December 1815) was a Mexican Catholic priest, statesman and military leader who led the Mexican War of Independence movement, assuming its leadership after the execution of Miguel Hidalgo y Costilla in 1811.

Born in Valladolid, Michoacán, Morelos studied at Colegio de San Nicolás and was appointed priest of Carácuaro in 1799. He joined Miguel Hidalgo's Cry of Dolores, soon becoming an insurgency leader. Aided by local peoples, along with revolutionary leaders Mariano Matamoros and Ignacio López Rayón, Morelos occupied territories in southern and central New Spain, leading the Siege of Cuautla and capturing Acapulco, New Spain's main port in the Pacific Ocean. His campaigns galvanized regional insurgencies against Spanish rule, which made him the royalist army's main rival.

Independence Day of Mexico (Spanish: Día de la Independencia de México) is celebrated on September 16, although the main celebrations, such as Cry of Dolores ("El Grito de Dolores") take place on the evening of September 15. This date marks the beginning of the Mexican War of Independence in 1810, when Miguel Hidalgo y Costilla called for rebellion against the Spanish Empire. The holiday is celebrated throughout the country with patriotic celebrations, music, food, and the traditional Grito at the National Palace.

María Josefa Crescencia Ortiz Téllez–Girón, popularly known as Doña Josefa Ortiz de Domínguez or La Corregidora (8 September 1768 – 2 March 1829) was an insurgent and supporter of the Mexican War of Independence, which fought for independence against Spain, in the early 19th century. She was married to Miguel Domínguez, corregidor of the city of Querétaro, hence her nickname.

Ortiz de Domínguez is commemorated in the annual reenactment of the Cry of Dolores.