If You Could Prevent One Event In Nigeria's History, Which Would It Be?

It looks like most Nigerians are not in favour of the 1914 amalgamation which brought the North and South to create one country under British rule.

Culled from; https://www.torimill.com/2018/05/if-you-could-prevent-one-event-in-nigerias-history-from-happening-which-would-it-be.html