On 25 April 1844, as Prime Minister and Minister of State simultaneously, President Luis González Bravo, together with Queen Isabella II of Spain made the peace negotiations and Treaty to recognise the Spanish American Independence of Chile as a country, for its official recognition by the Spanish Kingdom, called the Tratado de Paz y Amistad, in the government of President of Chile Manuel Bulnes.

Prime Minister Luis González Bravo was one of the few politicians who remained consistently faithful to Queen Isabella II throughout her ruling years, standing by her from the beginning of her effective monarchy, to the last days of her reign in 1868.

In September 1868, however, upon facing the first battle of the revolution, he advised Queen Isabella II to substitute him in the country's presidency for an experienced army general as Prime Minister, to better fight the ready to strike armed forces organized against her government.

Queen Isabella II and Prime Minister González Bravo were offered exile with their spouses and children in France by Emperor Napoleon III.

In France, as a last resort to rescue and preserve the Bourbon monarchy in Spain in face of the anti-monarchist revolutionary takeover and Queen Isabella II's exile, he supported the Carlists two years before his death.

Months later, in 1870, Queen Isabella II abdicated her crown in favour of her first son, Alfonso, so as to perpetuate the House of Bourbon dynasty in Spain, which came back into power in 1874 with him leading the Spanish Monarchy Restoration.