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Archaeology * * * --------------------------------------------------------------------- October 21, 2022 Cartography shows that the Isthmus of Tehuantepec was used as an inter-oceanic passage in the 16th century by University of Seville Cartographic methods show that the Isthmus of Tehuantepec was used as an inter-oceanic passage in the 16th century Sketch of the coast of the Gulf of Mexico, from Cape Santa Elena to the Panuco River), attributed to Spanish Royal Cosmographer, Alonso de Santa Cruz, 1544, [AGI, MP-Mexico, 1]. Credit: Source: Archivo General de Indias, Sevilla. The Isthmus of Tehuantepec, a region located in the south of Mexico, is the shortest distance between the Atlantic and Pacific oceans in all the country. Only 220 kilometers separate the two oceans. In the first half of the 16th century, Spanish conquerors put great effort into finding a strait that would connect the two oceans. This meant that, in the conquest explorations of the 16th century, this region was used as an inter-oceanic passage, making approximately two thirds of the journey along the mighty river Coatzacoalcos and the rest overland. This information is the result of the paper "The Map of the Coatzacoalcos River (1580): The First Cartography of the Isthmus of Tehuantepec," a study published in The Cartographic Journal and conducted by lecturer Manuel Morato Moreno, from the Higher Technical School of Engineering (ETSI); and emeritus professor Jose Maria Gentil Baldrich. Interest of the Spanish monarchy in the Isthmus of Tehuantepec In 1580, the mayor of Coatzacoalcos received a mandate from the Spanish crown to discover different aspects of the overseas territories, such as the geography, topography, place names, indigenous languages, plants, etc. He therefore commissioned a map to describe the geography of the region, indicating the geographic features, towns, and communication routes. For this, he had the assistance of Francisco Gali, a Spanish sailor traveling across these lands on his way to the Pacific coast. The exploration of this region between the "North Sea" and the "South Sea" had been, since the conquest of Mesoamerica, fixed in the minds of the Spanish monarchy and their representatives. Charles V made this project one of the priority missions of the explorers whose objective was to connect the kingdom of New Spain with the kingdom of Peru. Hernan Cortes also used it in 1520 to transport equipment, stores, and supplies. Analysis of the map An analysis of the map suggests that it was made in haste. Both the errors in distances and the numerous corrections which can still be observed support this conjecture. It seems that Francisco Gali was more interested, from his point of view as an explorer and navigator, in the most important aspect of the region: the possibility of connecting the North Sea and the South Sea through the Strait of Tehuantepec. Francisco Gali: Navigator, explorer, cosmographer and cartographer Francisco Gali, born in Seville in 1539, is a singular enigmatic character. Barely any information exists about him prior to his appearance in America. In spite of the few maps discovered that were drawn by Gali (two signed and a third attributed to him), the historic documents refer to him not only as an expert mariner, but also as a skilled cartographer and cosmographer. More information: Manuel Morato-Moreno et al, The Map of the Coatzacoalcos River (1580): The First Cartography of the Isthmus of Tehuantepec, The Cartographic Journal (2022). DOI: 10.1080/ 00087041.2021.1995126 Provided by University of Seville Citation: Cartography shows that the Isthmus of Tehuantepec was used as an inter-oceanic passage in the 16th century (2022, October 21) retrieved 6 November 2022 from https://phys.org/news/ 2022-10-cartography-isthmus-tehuantepec-inter-oceanic-passage.html This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. 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