Give me full detail of colonial administration in Nigeria and the constitution also

Colonial Administration:
The British governed Nigeria by using existing traditional political structures and leaders, rather than direct British officials.

• In the Northern Protectorate, where centralized emirates existed, indirect rule was largely successful. Emirs were given authority under British supervision, collecting taxes and administering justice according to local customs, provided they did not conflict with British policy.
• In the Southern Protectorate, particularly in the Igbo-speaking areas which lacked centralized authority, indirect rule was less effective and often led to resistance. The British sometimes created "warrant chiefs" who lacked traditional legitimacy, causing friction.
• The colonial government focused on maintaining law and order, collecting taxes, and facilitating the extraction of raw materials for British industries. Infrastructure development, like railways and ports, primarily served these economic interests.

Colonial Constitutions:
Several constitutions were introduced to manage the colony, gradually increasing African participation in governance.

1. Clifford Constitution (1922): This constitution established a Legislative Council for the Colony of Lagos and the Southern Protectorate, with a limited number of elected African representatives. The Northern Protectorate remained under the Governor's direct rule. It was the first to introduce the elective principle in British West Africa.

2. Richards Constitution (1946): Named after Governor Arthur Richards, this constitution divided Nigeria into three administrative regions: Northern, Western, and Eastern. It created regional assemblies with advisory powers and a central Legislative Council with increased African representation. This constitution laid the groundwork for Nigeria's future federal structure.

3. Macpherson Constitution (1951): Introduced by Governor John Macpherson, this constitution granted greater autonomy to the regions and established a central House of Representatives with a majority of elected African members. It also created regional Houses of Assembly and Executive Councils, significantly increasing African participation in both central and regional governments.

4. Lyttleton Constitution (1954): This constitution, named after Oliver Lyttleton, established a truly federal system of government. It clearly defined the powers of the federal and regional governments, granting the regions significant self-governing powers. Lagos became the federal capital territory, separate from the Western Region. This constitution was a crucial step towards independence.

5. Independence Constitution (1960): This was the final constitution before Nigeria gained full independence. It established Nigeria as a parliamentary democracy within the Commonwealth, with a Governor-General representing the British monarch as head of state, and a Prime Minister as head of government. It enshrined fundamental human rights and provided for a federal structure with three regions.