the civil war Hostile_encounter was waged between two opposing Agree_or_refuse_to_act groups , the pro-treaty provisional government and the anti-treaty ira , over the anglo-irish treaty Ratification .

the unk talks Telling led to Causation the signing Sign_agreement of the anglo-irish treaty on 6 december 1921 .

in june 1922 , disagreement Quarreling among republicans over the anglo-irish treaty led to the ten-month irish civil war Hostile_encounter .