German East Africa had an area of 100,000 square kilometers.
:6123On 12 July 1919, the Commission on Mandates agreed that the small Kionga Triangle south of the Rovuma River would be given to Portugal;:243 it eventually became part of independent Mozambique
The colony began when Carl Peters, an adventurer and the founder of the Society for German Colonization, signed treaties with several native chieftains on the mainland which is opposite Zanzibar

