Constitution of Portugal
Military & political leaders agree to end military rule & establish democracy
Role range: 1976-1978
Historical biography archive · Updated 2026-11-03
Mario Soares Biography and Timeline
Follow Mario Soares through 5 dated historical records for Portugal.
Mario Soares, historical timeline
A chronological timeline drawn from matching World History Database records.
5Distinct records
1 of 1Page
1976–1991Years on this page
1976
Prime Minister of Portugal
Appointed Prime Minister of Portugal
Role range: 1976-1978
Party Leader
Appointed Party Leader of the Socialist Party
1985
Treaty of Accession
Signs Portugal's Treaty of Accession to the European Communities in Lisbon.
Role range: 1985-1986 – 1983-1985
1991
Prime Minister of Portugal
Appointed Prime Minister, 2nd term
Role range: 1991-
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.