Final answer:
Ngugi identified the two stages of the dismemberment of Africa as the imposition of colonial rule and the creation of artificial boundaries.
Step-by-step explanation:
According to Ngugi, the two stages of the dismemberment of Africa were the imposition of colonial rule and the creation of artificial boundaries.
Under colonial rule, African societies were prevented from developing a wealthy capitalist class and were subjected to a two-tiered governance system, which marginalized local African political systems. The imposition of colonial policies often went against the interests of the African chiefs and people.
The creation of artificial boundaries during the period of European colonization resulted in the division of African peoples and led to conflicts based on tribal loyalties, civil wars, and political instability.