Designated as dictator Francisco Franco’s personal successor in 1969 with hopes that the young royal (the heir apparent created as Prince of Spain rather than with the traditional title of Prince of Asturias) could be groomed to maintain the authoritarian and ultra-conservation nature of the four-decades regime and ensure continuity, Juan Carlos Victor María de Borbón y Borbón-Dos Sicilias was crowned king on this day in 1975, following the death of Franco two days prior. Although an oath of allegiance to Movimiento Nacional was a prerequisite of the succession and publicly Juan Carlos seemed to support Franco, lending an air of legitimacy to ceremonially state functions, to the displeasure of liberal opposition and hardline republicans alike who hoped that the impending passing of Franco would mean an end to his reforms, the future monarch held secret meetings with political exiles and advocates in the resistance movement. 
Proclaimed by the Cortes Españolas, the legislative institution established by Franco, the court assuming a nominal parliamentary role under the unitary executive and gradually, against expectations, began the transition back to democracy along with the third restoration of the House of Bourbon—see also—within the realm. In June of 2014, Juan Carlos I abdicated the throne in favour of his son Felipe (with consent of the congress of deputies and the senate) over a simmering fiasco regarding a hunting safari and alleged embezzling in a period that also saw three other European monarchs resign, Pope Benedict XVI, Queen Beatrix of the Netherlands and Albert II of Belgium. Retired from public life five years after his abdication, Juan Carlos is referred to as rey emérito.
synchronoptica
one year ago: UN recognises Palestinians’ right to self-determination in 1974 (with synchronopticæ), the Orange Revolution plus experimental xenotransplations
thirteen years ago: the Russian language translation of The Hobbit
fourteen years ago: extraterrestrials and Earth customs
sixteen years ago: IKEA seasonal mulled-wine
