Why does Spain have ‘enclaves’ in North Africa?

Spain’s two tiny enclaves on the north coast of Africa have long been a flashpoint in its relationship with Morocco, which the territories border.

The only such European territories on African soil, they include the autonomous city enclaves of Ceuta and Melilla, as well as Plazas de Soberanía – a group of rocky islands off the Moroccan coast, which include the Chafarinas Islands, Alhucemas Islan...