Concept:Nationalists in Nigeria focused on ending colonial rule and achieving self-government.
Explanation:They first created political awareness among Nigerians through campaigns, newspapers, and public lectures.
This led to the formation of political parties such as the Nigerian National Democratic Party (NNDP), the Nigerian Youth Movement (NYM), and the National Council of Nigeria and the Cameroons (NCNC).
These parties helped mobilize Nigerians to demand independence from British colonial rule.
Through sustained agitation, negotiations, and constitutional developments, the nationalists successfully secured political independence for Nigeria in 1960.
Therefore, their greatest achievement was the political liberation of the nation.
Answer:C. political liberation of the nation.