Interior East Africa (1924–1935 CE): Colonial Consolidation, Early Nationalism, and Prelude to Conflict

Between 1924 and 1935, Interior East Africa experienced intensified colonial rule, early stirrings of nationalism, significant economic transformations, and diplomatic tensions that would culminate in the Second Italo-Ethiopian War.

Ethiopia: Modernization and Rising Tensions with Italy

In Ethiopia, Emperor Haile Selassie (crowned in 1930 following his earlier role as Regent Ras Tafari Makonnen) undertook ambitious modernization and centralization efforts. He promoted infrastructure projects, education, legal reforms, and attempted to establish a professional bureaucracy. His reforms sought to centralize power, limit regional autonomy, and curtail the traditional influence of local nobility (ras).

However, Ethiopia faced significant international pressures. Italy, under Benito Mussolini, grew increasingly aggressive, using border skirmishes in the disputed Walwal region as a pretext for invasion. In December 1934, the Walwal Incident sparked diplomatic confrontations between Ethiopia and Italy, leading ultimately to the Italian invasion in 1935.

British East Africa: Economic Expansion and African Discontent

In British-controlled territories (Kenya, Uganda, and Tanganyika), colonial authorities emphasized commercial agriculture, infrastructure development, and resource extraction. In Kenya Colony, the expansion of European settlement and the displacement of indigenous communities—particularly the Kikuyu, Kalenjin, and Maasai—increased tensions. African discontent intensified, driven by economic hardship, land dispossession, forced labor, and racial discrimination. Political associations and protest groups emerged, notably among the Kikuyu, laying foundations for future nationalist movements.

In Uganda Protectorate, the British favored Buganda, promoting cotton and coffee production and significantly enriching its landed aristocracy. However, resentment among other groups such as the Acholi, Lango, and the kingdoms of Bunyoro and Tooro continued to simmer, occasionally erupting into localized resistance.

Tanganyika: Mandate Administration and Agricultural Transformation

Under British administration, mandated Tanganyika (former German East Africa) saw continued focus on agricultural expansion, primarily cotton, coffee, and sisal. British economic policies intensified rural impoverishment, undermined traditional social structures, and deepened dissatisfaction among rural communities, setting the stage for future political unrest. Early nationalist figures began to emerge quietly during this period, although organized political movements were still nascent.

Anglo-Egyptian Sudan: Continued Marginalization and Unequal Development

Sudan remained under joint Anglo-Egyptian condominium rule, although effective administration was entirely British. Southern Sudanese communities—including the Dinka, Nuer, Zande, Bari, and Shilluk—continued facing isolation, economic neglect, and limited access to education and political participation under the British "Southern Policy." In the north, Khartoum benefited disproportionately from infrastructure projects, intensifying north-south divisions that would persist into future decades.

Ruanda-Urundi: Belgian Administration and Deepening Ethnic Divides

Under Belgian mandate authority, colonial rule in Ruanda-Urundi formalized and institutionalized the ethnic hierarchy favoring the Tutsi aristocracy over the Hutu majority. Belgians intensified the administrative and political marginalization of Hutu populations. Catholic missions expanded educational opportunities primarily for Tutsi elites, embedding socio-economic inequalities further into local society and setting foundations for future ethnic conflict.

Nyasaland and Northern Rhodesia: Labor Migration and Colonial Exploitation

In Nyasaland (modern Malawi) and Northern Rhodesia (modern Zambia), British colonial policies emphasized cash-crop agriculture and mining, significantly shaping local economies. Thousands of African men traveled to mines in Southern Rhodesia and South Africa, leading to significant social disruptions. The economic hardships resulting from exploitative colonial policies began fueling early anti-colonial sentiments among local communities.

Uganda and Kenya: Early Movements toward Nationalism

Early political movements began emerging quietly during the late 1920s and early 1930s. In Kenya, African political associations, including the Kikuyu Central Association (KCA) (established 1924), became focal points for anti-colonial agitation, land rights, and demands for representation. Early nationalist leaders such as Jomo Kenyatta began articulating grievances against British colonial injustices.

In Uganda, political movements initially emerged primarily within ethnic kingdoms, notably Buganda. While anti-colonial agitation was relatively muted compared to Kenya, grievances about colonial economic policies and limited representation were expressed through cultural and social organizations.

Early International Attention and European Rivalries

During this period, colonial rule faced increased international scrutiny, particularly through the League of Nations' mandate system, which was meant to oversee colonial governance. In reality, oversight was limited, allowing abuses and exploitation to continue largely unchecked. Ethiopia's status as an independent African nation attracted international attention, becoming symbolic of African sovereignty and resistance to European imperialism.

Prelude to Conflict: The Walwal Incident and Italian Aggression

The era culminated in the tense diplomatic confrontation between Ethiopia and Italy over the Walwal Incident (1934), in which Italian and Ethiopian forces clashed near a disputed border outpost. This provided Mussolini a pretext for full-scale invasion in 1935, marking the beginning of a conflict with profound regional and international implications.

Long-Term Consequences and Historical Significance

The period 1924–1935 marked a critical phase of colonial consolidation, early African nationalism, and heightened international tensions. Important outcomes included:

• Increasingly exploitative and coercive colonial economic policies causing widespread dissatisfaction among African populations.

• Emergence of nationalist political organizations and prominent African leaders who would dominate future independence movements.

• Heightened ethnic divisions in areas such as Ruanda-Urundi, creating fault lines for future conflicts.

• Prelude to Italy’s invasion of Ethiopia, setting the stage for broader conflict and highlighting African issues on the global stage.

These developments laid essential groundwork for significant political upheaval, anti-colonial resistance, and eventual moves toward independence that defined subsequent decades in Interior East Africa.