(Irish; " We Alone ")
Nationalist political party in Ireland.
It was founded by Easter Rising , when the demand of its leader Eamon de Valera for a united, republican Ireland won the party 73 out of 105 seats in the 1918 election. Its power diminished after 1926, when de Valera founded Fianna Fáil , which absorbed most of Sinn Féin's membership. The party continued as the political arm of the {{link=Irish Republican Army">Irish Republican Army , actively supporting Irish unification. Under the leadership of Gerry Adams in the late 20th and early 21st centuries, Sinn Féin participated in the peace talks on Northern Ireland and became one of the leading Roman Catholic parties in Northern Ireland.