In keeping with Spanish practice, for most of its colonial period, Puerto Rico had laws such as the Regla del Sacar or Gracias al Sacar. A person with African ancestry could be considered legally white if he could prove that at least one person per generation in the last four generations had been legally white. People of black. Ask for a home value estimate for CALLE MULATA today. Look through our exhaustive home values for all your real estate requirements at RE/MAX. CALLE MULATA, RIO RICO, AZ is currently not for sale. The sq. ft. single-family home is a bed, bath property. This home was built in and last sold on 10/20/ for $ View more property details, sales history and Zestimate data on Zillow.