On 5 December 1917, he led an uprising against Afonso Costa's Democratic Party government, and established an authoritarian regime and was elected President (unopposed) on 28 April 1918.
On 5 December 1917, he led an uprising against Afonso Costa's Democratic Party government, and established an authoritarian regime. He became the 99th Prime-Minister and was elected President (unopposed) on 28 April 1918.