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Imaging from NASA's Shuttle Radar Topography Mission STS-99 reveals part of the diameter ring of the crater in the form of a shallow circular trough. Numerous cenotes (sinkholes) cluster around the trough marking the inner crater rim.
The crater was discovered by Antonio Camargo and Glen Penfield, geophysicists who had been looking for petroleum in the Yucatán Peninsula during the late 1970s. Penfield was initially unable to obtain evidence that the geological feature was a crater and gave up his search. Later, through contact with Alan R. Hildebrand in 1990, Penfield obtained samples that suggested it was an impact feature. Evidence for the crater's impact origin includes shocked quartz, a gravity anomaly, and tektites in surrounding areas. (Full article...)
The Mexican–American War, also known in the United States as the Mexican War, and in Mexico as the United States intervention in Mexico, was an invasion of Mexico by the United States Army from 1846 to 1848. It followed the 1845 American annexation of Texas, which Mexico still considered its territory because it refused to recognize the Treaties of Velasco, signed by President Antonio López de Santa Anna after he was captured by the Texian Army during the 1836 Texas Revolution. The Republic of Texas was de facto an independent country, but most of its Anglo-American citizens who had moved from the United States to Texas after 1822 wanted to be annexed by the United States.
Sectional politics over slavery in the United States had previously prevented annexation because Texas would have been admitted as a slave state, upsetting the balance of power between Northern free states and Southern slave states. In the 1844 United States presidential election, Democrat James K. Polk was elected on a platform of expanding U.S. territory to Oregon, California (also a Mexican territory), and Texas by any means, with the 1845 annexation of Texas furthering that goal. However, the boundary between Texas and Mexico was disputed, with the Republic of Texas and the U.S. asserting it to be the Rio Grande and Mexico claiming it to be the more-northern Nueces River. Polk sent a diplomatic mission to Mexico in an attempt to buy the disputed territory, together with California and everything in between for $25million (equivalent to $778 million in 2023), an offer the Mexican government refused. Polk then sent a group of 80 soldiers across the disputed territory to the Rio Grande, ignoring Mexican demands to withdraw. Mexican forces interpreted this as an attack and repelled the U.S. forces on April 25, 1846, a move which Polk used to convince the Congress of the United States to declare war. (Full article...)
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Unomásuno (English: One Plus One) is a Mexican daily tabloid newspaper circulated in Mexico City. Formed in 1977 by former employees of Mexico City's daily newspaper Excélsior, it became one of the leading leftist newspapers in Mexico during the late 1970s and early 1980s. The newspaper covered investigative topics that were often avoided by the rest of the Mexican press at the time, and it was a harsh critic of the Mexican government. By the mid-1980s, disagreements over the newspaper's management style led to internal divisions. Those who disagreed with Unomásuno and its future initiatives left in 1984 and formed La Jornada, another leftist daily in Mexico City.
In the late 1980s, Unomásuno was a victim of a backlash from the Mexican government for publishing articles highlighting a growing opposition faction within Mexico's dominant political party, the Institutional Revolutionary Party (PRI). Its founder was threatened with prison for tax evasion, and the newspaper was forced to pay hefty fines. In 1989, its founder sold the newspaper to a PRI-affiliated businessman. Under the new ownership, Unomásuno became a propaganda organ for the PRI and published articles criticizing leftist opposition groups. Its circulation declined drastically over the years, and although Unomásuno was resold in 1998, it continued to experience financial difficulties. (Full article...)
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 their King Ferdinand VII, held captive during the Peninsular War, by revolting against the European-born Spaniards who had overthrown the Spanish Viceroy José de Iturrigaray. (Full article...)
The cuisine of Veracruz is the regional cooking of Veracruz, a Mexicanstate along the Gulf of Mexico. Its cooking is characterized by three main influences—indigenous, Spanish, and Afro-Cuban—per its history, which included the arrival of the Spanish and of enslaved people from Africa and the Caribbean. These influences have contributed many ingredients to the cooking including native vanilla, corn and seafood, along with rice, spices and tubers. How much the three mix depending on the area of the state, with some areas more heavily favoring one or another. The state has worked to promote its cuisine both in Mexico and abroad as part of its tourism industry. (Full article...)
Image 2David Huerta is a contemporary philosopher and poet who examines human existence, freedom, and meaning in Mexican society, blending philosophy with art and literature. (from Culture of Mexico)
Image 3Battle of Tampico (1829) a conflict between Mexican forces led by General Antonio López de Santa Anna and Spanish loyalists attempting to reconquer Mexico, resulting in a decisive Mexican victory that further solidified Mexico's independence from Spain. (from History of Mexico)
Image 4Distribution of linguistic groups around 1500. (from Culture of Mexico)
Image 12Battle of Miahuatlán took place on 3 October 1866. The liberal victory at Miahuatlán was significant because it allowed them to consolidate their control over southern Mexico. (from History of Mexico)
Image 13Agustín de Iturbide the first Emperor of Mexico in 1822 after leading the Mexican War of Independence against Spain, but his reign was short-lived, lasting only until 1823 when he abdicated, and Mexico transitioned to a republic. (from History of Mexico)
Image 17Logo of the Partido Nacional Revolucionario, with the colors of the Mexican flag (from History of Mexico)
Image 18Battle of Centla, the first time a horse was used in battle in a war in the Americas. Mural in the Palacio Municipal of Paraíso, Tabasco (from History of Mexico)
Image 31Ignacio Comonfort significant role during the tumultuous period of the mid-19th century, including the Reform War and early stages of the Mexican Republic's transition. (from History of Mexico)
Image 32Logo of Nacional Financiera (NAFIN), the state development bank. (from History of Mexico)
Image 44Entry into Mexico City by the Mexican army (from History of Mexico)
Image 45Shield Jaguar and Lady Xoc, Maya, lintel 24 of temple 23, Yaxchilan, Mexico, ca. 725 ce. (from History of Mexico)
Image 46Plutarco Elías Calles politician and revolutionary general who served as President of Mexico from 1924 to 1928, known for his role in shaping modern Mexico through reforms and the consolidation of state power. (from History of Mexico)
Image 53The Volkswagen Beetle, known in Mexico as the "Vocho," is perhaps the most iconic classic car in the country. Its production in Mexico began in 1967, and it continued until 2003, making it a symbol of Mexican automotive culture. (from Culture of Mexico)
Image 56Porfirio Díaz dominant Mexican political and military figure who served as President for much of the late 19th and early 20th centuries, characterized by his long rule and the modernization efforts known as the Porfiriato. (from History of Mexico)
Image 59General Santa Anna known for his leadership during the Texas Revolution, Mexican-American War, and turbulent periods of Mexican history marked by political instability and territorial losses. (from History of Mexico)
Image 61President Obregón. Note that he lost his right arm in the Battle of Celaya (1915), earning him the nickname of Manco de Celaya ("the one-armed man of Celaya"). (from History of Mexico)
Image 62A map of Mexico 1845 after Texas annexation by the U.S. (from History of Mexico)
Image 63Comanchería, territory controlled by the Comanches, prior to 1850 (from History of Mexico)
Image 64Chacmool, Maya, from the Platform of the Eagles, Chichen Itza, Mexico, ca. 800–90 CE (from History of Mexico)