Unlike Tanganyika, which was devastated during the prolonged fighting between Britain and Germany in the East African Campaign of World War I, Uganda prospered from wartime agricultural production. After the population losses from disease during the era of conquest and at the turn of the century (particularly the devastating sleeping sickness epidemic of 1900- 1906), Uganda's population was growing again. Even the 1930s depression seemed to affect smallholder cash farmers in Uganda less severely than it did the white settler producers in Kenya. Ugandans simply grew their own food until rising prices made export crops attractive again.