 Cuyo Spanish was influenced by a dialect of the Spanish language spoken mainly in the areas in and around what Basin?
Cuyo Spanish: Cuyo Spanish or Cuyano Spanish (Español Cuyano) is the dialect of Spanish that evolved in the historical province of Cuyo and that is now spoken in the Argentine provinces of Mendoza and San Juan. Cuyo Spanish:  Later on, under the Argentine Republic Rioplatense Spanish, the dialect of Buenos Aires and Uruguay influenced Cuyo Spanish. Rioplatense Spanish: "Rioplatense" Spanish (Spanish: "español rioplatense" , locally "castellano rioplatense") is a dialect of the Spanish language spoken mainly in the areas in and around the Río de la Plata Basin of Argentina and Uruguay.
Río de la Plata Basin