Complex sentence: On 25 March 2015, Correa named Long Minister of Culture and Heritage, a post he held until March 2016, dedicating much of his efforts to passing a new and long overdue Law of Culture mandated by the 2008 Constitution.
Split into simpler sentences: On 25 March 2015, Correa appointed Long as Minister of Culture and Heritage, a post he held until March 2016. Long dedicated much of this his efforts as Minister of Culture to passing a new and long overdue Law of Culture mandated by the 2008 Constitution.