Why Congress accepted the Partition : 

The partition of India was a part of the Mountbatten Plan, which was announced on June 3, 1947. The plan was accepted by both Congress and Muslim League for different reasons. 

The Congress accepted the plan of partition due to following reasons : 

Due to communal riots the situation was taking a worst turn. In order to avoid further bloodshed among Hindus and Muslims, Congress accepted the partition of India. 

The experience of working with the Muslim League had convinced the Congress that the League had aimed at the Interim Government to obstruct and not to cooperate and that having a joint administration with the League was not feasible. 

The only alternative of partition was a federation with a weak center which could not face disruptive forces. After Partition, a smaller India with a strong center was more desirable. 

The Congress leaders felt that the partition would remove separate electorate and many undemocratic procedures which were implemented due to the demand of the Muslim League. 

If the Congress would have not accepted the Partition, the transfer of power would have been delayed, which may have plugged India into another civil war and disintegration of country.