https://history.state.gov/countries/mexico Dec 6, 2022 "Diplomatic relations between the United States and Mexico have been intimate and often contentious. At the outset, the issue of granting recognition to an independent Mexico divided American leaders such as Henry Clay and John Quincy Adams. After finally recognizing Mexico in 1822, the U.S. push for territorial expansion led to a war between the two countries (1846-48)." United States Department of State

https://catalog.archives.gov/id/2127339 Dec 1, 1848 "This map accompanied President James K. Polk's annual message to Congress in December 1848. It represents Polk's conception as a Southern Democrat of how to divide up the new territory acquired through the Treaty of Guadalupe-Hidalgo. It became the starting point of debates in Congress over slavery and westward expansion." National Archives Catalog

https://www.archives.gov/education/lessons/guadalupe-hidalgo brought an official end to the Mexican-American War (1846-1848), was signed on February 2, 1848, at Guadalupe Hidalgo, a city north of the capital where the Mexican government had fled with the advance of U.S. forces. 

https://history.state.gov/milestones/1861-1865/french-intervention May 5, 2023 "In 1862, French Emperor Napoleon III maneuvered to establish a French client state in Mexico, and eventually installed Maximilian of Habsburg, Archduke of Austria, as Emperor of Mexico." Milestones in the History of U.S. Foreign Relations

https://history.state.gov/milestones/1830-1860/gadsden-purchase May 5, 2023 "The Gadsden Purchase, or Treaty, was an agreement between the United States and Mexico, finalized in 1854, in which the United States agreed to pay Mexico $10 million for a 29,670 square mile portion of Mexico that later became part of Arizona and New Mexico." Milestones in the History of U.S. Foreign Relations

https://blogs.loc.gov/law/2011/02/the-history-of-the-mexican-constitution Feb 24, 2011 "February 5, 2011 marked the 94th anniversary of the Constitution of 1917. On that day, Mexican President Venustiano Carranza promulgated the Constitution that is still in force today in Mexico. This particular Constitution was a product of the Mexican Revolution, which just happens to have celebrated its centennial last year." Library of Congress Blogs

https://otexa.trade.gov/Pdfs/SylviaMontano.pdf May 1, 2023 "U.S. Commercial Service in Mexico • The U.S. Commercial Service is an Agency of the U.S. Department of Commerce. • Our mission is primarily to help small and medium sized, exportready companies to enter Mexico and to protect U.S. Business interests abroad..." Mexico is the United States’ 3rd largest trading partner  Mexico is the 2nd destination of all U.S. exports  Mexico accounts for roughly 1/6 of all U.S. exports  22 American states depend on Mexico as their first or second destination for exports  More than $1.25 billion a day in two-way trade  Nearly 50,000 U.S. small and medium-sized enterprises export to Mexico"" International Trade Administration U.S. Department of Commerce

https://www.nytimes.com/2021/11/11/t-magazine/mexico-rice-conquest.html Nov 11, 2021 "Having arrived in the country via the Spanish Conquest, the grain’s presence poses the question: What’s native, and what isn’t, when it comes to a nation’s culinary history...Rice had come to Mexico shortly after the Spanish conquest of the 1520s. It was a time when Spain and Portugal were spreading their tentacles across the globe: The Portuguese viceroy Alfonso de Albuquerque’s conquest of Goa, on the west coast of India, occurred nine years before the conquistador Hernán Cortés’s 1519 march on Mexico. Some four decades later, Spanish vessels known as the Manila Galleons first brought rice to Mexico from the Philippines. What interested me was what place this Old World staple, come via Asia through Europe to the New World, held in the lives of these people who had a mythical attachment to corn." The New York Times Style Magazine