After World War One through the establishment of the East African Currency Board ( EACB ) in December 1919 .
World War One is the territory of Tanganyika became a mandate territory of the United Kingdom and its monetary system was aligned to that of Kenya and Uganda .
After World War One , the territory of Tanganyika became a mandate territory of the United Kingdom and its monetary system was aligned to that of Kenya and Uganda , through the establishment of the East African Currency Board ( EACB ) in December 1919 .