¡Mexicanos Valientes Seguid! is a timeline in which Mexico continues being an Empire, the main point of divergence being that Antonio López de Santa Anna requesting troops to launch an assault to take the fortified island of San Juan de Ulúa in Veracruz, with the true intention to use these troops to depose then-Emperor of Mexico, Agustín de Iturbide. However, Iturbide calls his bluff and makes him go on with the assault, which, while successful, it costs Santa Anna's life, and cripples the nascent Republican movement in Mexico. Some other things happen, such as an united Gran Colombia, Argentina and Uruguay together as the Platinean Federation, Comanches serving in Mexico's Imperial Army, amongst other things that are due to happen.
The main draw of this timeline is actually the way it is written, using dry wit and black humour.