Action of April 3, 1836

Matamoros, officially known as Heroica Matamoros, is a city in the northeastern Mexican state of Tamaulipas, and the municipal seat of the homonymous municipality. It is on the southern bank of the Rio Grande, directly across the border from Brownsville, Texas, United States. Matamoros is the second largest city in the state of Tamaulipas. As of 2016, Matamoros had a population of 520,367. In addition, the Matamoros–Brownsville Metropolitan Area has a population of 1,387,985, making it the 4th largest metropolitan area on the Mexico–US border. Matamoros is the 39th largest city in Mexico and anchors the second largest metropolitan area in Tamaulipas.The economy of the city is significantly based on its international trade with the United States through the USMCA agreement, and it is home to one of the most promising industrial sectors in Mexico, mainly due to the presence of maquiladoras. In Matamoros, the automotive industry hosts the assembly and accessories plants for brands such as General Motors, Ford, Chrysler, BMW, and Mercedes-Benz. Prior to the growth of the maquiladoras in the 2000s, Matamoros' economy had historically been principally based on agriculture, since northern Mexico's biggest irrigation zones are in the municipality. PEMEX announced a multibillion-peso offshore drilling project for the port of Matamoros, one of the future prospects for Mexico's oil industry.Matamoros is a major historical site, the site of several battles and events of the Mexican War of Independence, the Mexican Revolution, the Texas Revolution, the Mexican–American War, the American Civil War, and the French Intervention that allowed the city to earn its title of "Undefeated, Loyal, and Heroic". The Mexican National Anthem was played for the first time in public at an opera house, the Teatro de la Reforma (sometimes known as The Opera Theater) in Matamoros.Matamoros has a semiarid climate, with mild winters and hot, humid summers. Matamoros and Brownsville, Texas, are home to the Charro Days and Sombrero Festival, two-nation fiestas that commemorate the heritage of the U.S. and Mexico which are celebrated every February.

The Diocese of Matamoros (Latin: Dioecesis Matamorensis) is a Latin Church ecclesiastical territory or diocese of the Catholic Church in the northeast part of the state of Tamaulipas, Mexico, along the border with Texas. The diocese is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Monterrey.

The Brownsville & Matamoros International Bridge, also known as B&M International Bridge, Brownsville-Matamoros International Bridge and Express Bridge, is one of three international bridges that cross the U.S.-Mexico border between the cities of Brownsville, Texas, and Matamoros, Tamaulipas. This international bridge unites the Matamoros–Brownsville Metropolitan Area, which counts with a population of 1,136,995, making it the 4th largest metropolitan area in the Mexico-US border.It is popularly called the "old bridge" because its original incarnation, still standing, is the city's oldest international bridge. In 1999, Texas state Historical marker 11778 was placed at the site by the Texas Historical Commission and the Cameron County Historical Commission to recognize the bridge's historical significance.

The Brownsville B&M Port of Entry opened in 1909 with the completion of the Brownsville & Matamoros International Bridge. The bridge was built to carry trains, horses, wagons and pedestrians. The original bridge could swing open to allow river traffic to pass; however it was a function that was almost never used due to the shallowness of the Rio Grande. The bridge was substantially renovated in 1953, and a second 4-lane bridge dedicated to northbound traffic was built adjacent to it in 1997. Since 1999, all truck traffic has been diverted to the Veterans and Los Indios crossings.

Matamoros is a municipality located in the Mexican state of Tamaulipas. Its municipal seat is the City of Matamoros.

Brownsville Early College High School (BECHS) is a public high school in Brownsville, Texas, United States. It is one of seven high schools operated by the Brownsville Independent School District and classified as a 3A school by the UIL. In 2015, the school was rated "Met Standard" by the Texas Education Agency. In 2018, it was ranked the 59th best high school in Texas and 359th in the National Rankings according to the U.S. News & World Report. Brownsville Early College High School does not have school team sports; however, it does offer physical education (PE).

Gateway International Bridge is one of three international bridges that cross the U.S.-Mexico border between the cities of Brownsville, Texas, and Matamoros, Tamaulipas. It is owned and operated by Cameron County. Over the past century, it has developed the nickname of "The New Bridge" when the bridge was remodeled back in the 20th century. Despite the fact that the Veteran's International Bridge is newer than Gateway, it still retains its nickname. This international bridge unites the Matamoros–Brownsville Metropolitan Area, which counts with a population of 1,136,995, making it the 4th largest metropolitan area in the Mexico-US border.

The Brownsville Gateway Port of Entry opened in 1926 with the completion of the Gateway International Bridge. The original bridge was a steel arch design, and arches, which have long been used to signify international gateways, were incorporated into the design of the Matamoros Gateway border station in the 1950s. Unfortunately, the steel arch bridge was not well maintained, and it was replaced with two flat deck spans in the late 1970s. All truck traffic has been prohibited since 1999.

XELD-TV (channel 7) was a television station located in Matamoros, Tamaulipas, Mexico, whose over-the-air signal also covered the Rio Grande Valley across the international border in the United States. The station broadcast in English and Spanish from September 15, 1951, to April 29, 1954.

Fort Brown (originally Fort Texas) was a military post of the United States Army in Cameron County, Texas, during the latter half of the 19th century and the early part of the 20th century. Established in 1846, it was the first US Army military outpost of the recently annexed state. Confederate Army troops stationed there saw action during the American Civil War. In the early 20th century, it was garrisoned in relation to military activity over border conflicts with Mexico. Surviving elements of the fort were designated as a National Historic Landmark in 1960.

Texas Southmost College (TSC) is a public junior college located in Brownsville, Texas, United States.

The Mathematics and Science Academy (MSA), a high school located in Brownsville, Texas, was established by the 79th Texas Legislature in May 2005. It was designed as a commuter program at the University of Texas at Brownsville and Texas Southmost College (UTB) for high school-aged students who are gifted in mathematics and science. Rather than complete their final two years of traditional high school at other public institutions, students of the Math and Science Academy are required to take classes taught by UTB/TSC faculty with regular UTB students, but are provided with more supervision and guidance than traditional college students. The students are not charged tuition, book fees, nor any other fees typically charged by the university, but transportation and food are not provided for students. Graduating from the Mathematics and Science Academy program grants you a Distinguished high school diploma as well as an Associates of Arts degree, if you complete the necessary college hours. MSA is only the second high school program of its kind; the University of North Texas hosts a similar program, the Texas Academy of Mathematics and Science.