What were the main reasons for disappointment after the Foumban Conference, and which factor has NOT contributed to Paul Biya's prolonged rule in Cameroon?

Here are the solutions to the questions:

24. The main reason why the people of British Southern Cameroons were disappointed with the outcome of the Foumban Conference was because: The Foumban Conference in 1961 led to the formation of the Federal Republic of Cameroon. Many in the British Southern Cameroons were disappointed because the new federal structure adopted a highly centralized system, which limited their autonomy and control over their own affairs, contrary to their expectations for a more balanced federation. The correct option is B. $\boxed{\text{B. It adopted a highly centralized system}}$

25. All the following factors have been responsible for the prolonged stay of the Biya government in power since 1982 except? Paul Biya has been President of Cameroon