Question: On 1 July 1943 the 3rd Government of Ireland was officially appointed and the new Fianna Fáil government was led by a prominent politician and statesman whose politica career spanned over half a what?

Context paragraphs:
Parliamentary Secretaries of the 9th Dáil: On 21 July 1937, the 1st Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by Éamon de Valera, who appointed the following Parliamentary Secretaries.

Parliamentary Secretaries of the 11th Dáil: On 1 July 1943 the 3rd Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Éamon de Valera, who appointed the following Parliamentary Secretaries.

Ministers of State of the 21st Dáil: On 5 July 1977, the 15th Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Jack Lynch, who appointed the following Parliamentary Secretaries.

Parliamentary Secretaries of the 14th Dáil: On 13 June 1951 the 6th Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Éamon de Valera, who appointed the following Parliamentary Secretaries.

Parliamentary Secretaries of the 12th Dáil: On 9 June 1944 the 4th Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Éamon de Valera, who appointed the following Parliamentary Secretaries.

Parliamentary Secretaries of the 10th Dáil: On 30 June 1938 the 2nd Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Éamon de Valera, who appointed the following Parliamentary Secretaries.

Parliamentary Secretaries of the 17th Dáil: On 11 November 1961 the 10th Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Seán Lemass, who appointed the following Parliamentary Secretaries.

Parliamentary Secretaries of the 16th Dáil: On 20 March 1957 the 8th Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Éamon de Valera, who appointed the following Parliamentary Secretaries.

Éamon de Valera: Éamon de Valera ( ; ] ; first registered as George de Valero; changed some time before 1901 to Edward de Valera; 14 October 1882 – 29 August 1975) was a prominent politician and statesman in 20th-century Ireland.  His political career spanned over half a century, from 1917 to 1973; he served several terms as head of government and head of state.  He also led the introduction of the Constitution of Ireland.

Parliamentary Secretaries of the 19th Dáil: On 2 July 1969 the 13th Government of Ireland was officially appointed by Dáil Éireann.  The new Fianna Fáil government was led by the Taoiseach Jack Lynch, who appointed the following Parliamentary Secretaries.

Supporting paragraphs: Parliamentary Secretaries of the 11th Dáil Éamon de Valera
Answer: century