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Hace 9 horas · The Federal Republic of Central America (Spanish: República Federal de Centro América), initially known as the United Provinces of Central America (Provincias Unidas del Centro de América), was a sovereign state in Central America which existed from 1823 to 1839/1841. The federal republic was composed of five states: Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua.
Hace 9 horas · Juan Pablo Bonet, Reducción de las letras y arte para enseñar a hablar a los mudos ("Reduction of letters and art for teaching mute people to speak") (Madrid, 1620) Groups of deaf people have used sign languages throughout history. One of the earliest written records of a sign language is from the fifth century B.C., in Plato's Cratylus, where Socrates says: "If we hadn't a voice or a tongue ...
