Between 1910 and 1920, diplomatic relations between Brazil and Mexico were severed during the Mexican revolution. Diplomatic relations were re-reestablished in 1920 when Brazil recognized the new Mexican government. In 1922, diplomatic missions in each other's capitals were upgraded to embassies, respectively. During World War II, both Brazil and Mexico were the only two Latin American nations to declare war on the Axis powers and to send troops to fight abroad. Brazil sent an expeditionary force to fight in Italy while Mexico sent the 201st Fighter Squadron to fight in the Philippines. In 1960, President Adolfo López Mateos became the first Mexican head-of-state to pay an official visit to Brazil. The visit was reciprocated with the visit to Mexico by Brazilian President João Goulart in 1962. Since the initial visits, there have been several high-level visits by leaders of both nations.