¿Por qué Perón destaca varias veces durante el discurso el trabajo realizado por las
organizaciones sindicales? ¿a qué sector lo contrapone?

can you translate that into English please? then I will help you

Explanation:

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

the first forms of writing came from them in the form of pictographs around 3100 bc.