sentences:  During the colonial period, Britain effectively controlled the Nile through its military presence in Africa.Since Sudanese independence, Sudan has renegotiated with Egypt over the use of the Nile waters.The 1959 agreement between Sudan and Egypt allocated the entire average annual flow of the Nile to be shared among the Sudan and Egypt at 18.5 and 55.5 billion cubic meters respectively, but ignored the rights to water of the remaining eight Nile countries.