Answer:
The British Government regarded the Rising as merely a riotous act by unruly citizens. They have always taken the stance that such actions were not supported by the majority and were the actions of an extremist few. This however is far from the truth. After the Rising had been defeated, its leaders executed and martial law declared on Dublin City, the British government was completely unprepared for the mass support of the Irish public in favour of the rebels. In fact the 1916 Rising was the result of renewed patriotism and republicanism that had begun to resurface in the late 1800's with the Gaelic Revival. The Irish people were remembering our history,culture and how we have been opressed by foreign powers.
The actions and attitudes of the British government was the final catalyst that led to the War of independence,civil war,border campaign and troubles.