Complex sentence: The eventual achievement, during the administration of the Dublin born hero of the Napoleonic war Prime Minister the Duke of Wellington, of U.K. wide Catholic Emancipation in 1829, followed an effective Irish campaign by Daniel O'Connell, the Liberator.
Split into simpler sentences: The eventual achievement, during the administration of the Dublin born hero of the Napoleonic war the Duke of Wellington, of U.K. wide Catholic Emancipation in 1829. This followed a very effective Irish campaign by Daniel O'Connell, the Liberator.