"Encomienda" was the term used for what practice?

Encomienda, in Spain's American and Philippine colonies, legal system by which the Spanish crown attempted to define the status of the indigenous population. It was based upon the practice of exacting tribute from Muslims and Jews during the Reconquista (“Reconquest”) of Muslim Spain.     Hope this helps

an ethnic enclave is a geographic area with high ethnic concentration,

safaid was known as the most beautiful architecture