Nasrid dynasty
In Al Andalus, the last remaining Moorish Nasrid dynasty in the Emirate of Granada paid tribute to the Christian Kingdom of Castile (present-day Spain). Tributary states, usually on the periphery of the Ottoman Empire, were under vassalage in different forms. Some were allowed to select their own leaders, while others paid tribute for their lands. In the Western colonial system, non-Western states were sometimes incorporated into a European empire as protectorates.