Complex sentence: The "Sociedades el Santísimo" (Societies of the Holiest) are in charge of the celebration, its origins are traced back to the 18th century, being the oldest brotherhood of the American continent.
Split into simpler sentences: The "Sociedades del Santísimo" (Societies of the Holiest) are in charge of the celebration. Its origins are traced back to the 18th century, being the oldest brotherhood of the American continent.