Given the task definition and input, reply with output. In this task, you are given a sentence in Spanish and your task is to translate it into English. In translation, keep the numbers and capitalization (capitalize only the first word of each sentence and name).

El factor clave de este texto, tal y como ha sido enmendado, es la demanda de una Carta de Derechos Fundamentales para su incorporacion a los tratados.
The key factor in this text as it has been amended, is the call for a Charter of Fundamental Rights to be incorporated into the treaties.