As Minister of Overseas in the government presided by General Prim in 1870, Moret, himself a member of the Spanish Abolitionist Society, pushed for the abolition of slavery and the creation of a constitution for Puerto Rico.
As Overseas Minister in 1870 under General Prim's leadership, Moret, a proponent of abolition like the Spanish Abolitionist Society, worked to end slavery and create a constitution for Puerto Rico.