Wikipedia - Liga de Expansión MX

The Liga de Expansión MX, also known as Liga de Desarrollo (Liga BBVA Expansión MX for sponsorship reasons), is a Mexican football league founded in 2020 as part of the Mexican Football Federation's "Stabilization Project", which has the primary objective of rescuing the financially troubled teams from the Ascenso MX and prevent the disappearance of a second-tier league in Mexico, for which there will be no promotion and relegation for six years. The project also attempts for Liga MX and former Ascenso MX teams to consolidate stable projects with strong administration, finances, and infrastructure.

History

On 20 February 2020, the presidents of the Liga MX clubs, the Ascenso MX clubs and Mexican Football Federation executives had a meeting, in which different topics were discussed with the intent of strengthening the two main leagues in the country.

On 26 June 2020, the league was officially presented, with the participation of 16 teams: Alebrijes de Oaxaca, Atlante, Atlético Morelia, Cancún, Celaya, Cimarrones de Sonora, Correcaminos UAT, Dorados de Sinaloa, Leones Negros UdeG, Mineros de Zacatecas, Tampico Madero, and Venados F.C. as Ascenso MX teams. Pumas Tabasco and Tapatío entered to the league as Liga MX affiliates. Finally, on 17 July 2020, Tepatitlán and Tlaxcala were invited as Liga Premier expansion teams.

On 22 May 2023, the Liga MX owners assembly approved a reform for the league that will be carried out in 2024. As a consequence of this reform, all the member teams of Liga MX must have a team in the Liga de Expansión MX, which will be made up of Under-23 footballers, who will compete together with the teams that were already part of the category, the new league will replace to Liga MX U–20 and will be called Expansión Sub–23.