Can you please check if everything is correct? I included two paragraphs on the history of Ireland. Thank you.
1) The rebels occupied Dublin's key buildings and for some days had control of the city. The revolt, however, was put down by the British army and 14 of the rebels, including their leader Patrick Pearse, were executed.
2)Despite its failure, the Easter Rising was the real beginning of Irish Independence.
3) One of the Irish armed groups was the Irish nationalist party Sinn Feein, which in Gaelic means "ourselves alone". In the 1918 election Sinn Fein won throught Ireland, except in the predominantly Protestant Ulster.
4) With this overwhelming majority, the newly elected Irish MPs did not join the British Parliament, as they had done, but met in the Dial in Dublin, announcing that Ireland was now a republic.
5) The War of Independence began in 1919, led by the IRA and Sinn Fein; it ended in 1921 with the establishment of the Irish Free State, an independent Ireland within the British Commonwealth. Only Ulster remained united with Britain.
2 answers
In (4), you probably want the word "previously" before "had done". The word "instead" would improve the sentence before or after "met". That is just a matter of style.
(1) would look and read better if you started a new sentence with "Fourteen".
Other that that, I see no grammatical problems.
The only other thing I'd add is that there needs to be a comma after "British army" in #1. That's a compound sentence, and this is one of the PRIMARY comma uses in English.
http://grammar.ccc.commnet.edu/grammar/commas.htm
See #2 here.