Original sentence: Although Arias Navarro was a moderate leader during his premiership, he had initially been a hardline politician and was involved in the White Terror, having signed thousands of death warrants during the dismantling of the Spanish Republic.Carlos Arias Navarro, 1st Marquess of Arias Navarro (11 December 1908 – 27 November 1989) was the prime Minister of Spain during the final years of the Francoist dictatorship and the beginning of the Spanish transition to democracy
Edited sentence: Arias Navarro was a moderate leader in the last phase of Francoism and the beginning of the transition to democracy.Carlos Arias Navarro, 1st Marquess of Arias Navarro (11 December 1908 – 27 November 1989) was one of the best-known Spanish politicians during the Francoist regime.However, he had been a hardline politician and involved in the White Terror by signing thousands of death warrants during the dismantling of the Spanish Republic