On 1 January 1801, in the wake of the republican United Irishmen Rebellion, the Irish Parliament was abolished and Ireland became part of a new United Kingdom of Great Britain and Ireland formed by the Acts of Union 1800. Catholics were not granted full rights until Catholic Emancipation in 1829, achieved by Daniel O’Connell. The catastrophe of the Great Famine struck Ireland in 1845 resulting in over a million deaths from starvation and disease and a million refugees fleeing the country, mainly to America. Irish attempts to break away continued with Parnell's Irish Parliamentary Party which strove from the 1880s to attain Home Rule through the parliamentary constitutional movement, eventually winning the Home Rule Act 1914, although this Act was suspended at the outbreak of World War I.