Brazil's left-wing President Luiz Inácio Lula da Silva has been elected to a fourth term in office, defeating Flávio Bolsonaro in the runoff of the presidential election. The right-wing challenger Bolsonaro has called for the election to be annulled, following in his father Jair Bolsonaro’s footsteps by not recognising the results. Lula becomes the first president in Brazil's history to win a four…