How did Eamon de Valera influence Irish politics after independence?

Eamon de Valera profoundly shaped Irish politics following independence by systematically dismantling the constitutional constraints of the 1921 Anglo-Irish Treaty and establishing a sovereign, independent state.12

His influence was characterized by several key actions:

• Constitutional Reform: After founding the Fianna Fáil party in 1926, he led the government starting in 1932. He moved to abolish the oath of allegiance to the British crown and downgraded the office of the governor-general. His 1937 constitution renamed the state "Ireland" (or Éire), effectively creating an independent democracy.12
• Economic Sovereignty: He initiated an "economic war" with Great Britain by withholding land-purchase annuities, which he used to promote a program of national self-sufficiency and protective tariffs.12
• Foreign Policy and Neutrality: Through the 1938 Anglo-Irish defense agreement, he secured the return of British-held naval bases, which enabled Ireland to maintain neutrality during World War II—a stance he viewed as the ultimate expression of Irish independence.12
• Political Dominance: As taoiseach and later as president (1959–73), he remained a central, unifying, and often polarizing figure in Irish public life for half a century.1