Answer:
Nkrumah's decision made him considered a dictator.
As a ruler, he allowed the implementation of preventive detention acts, which could be applied to anyone.
Step-by-step explanation:
Nkrumah was an African politician, president of Ghana and founder of Pan-Africanism. He was primarily responsible for establishing a single political party in Ghana, which gave him a lot of power and made him seen as a dictator in the eyes of the nations.
As ruler, he established preventive detention that could be applied to any citizen. This was a very controversial decision in his government, as it allowed any innocent person to be arrested, on account of political and ideological interests contrary to Nkrumah's. This alienated many of Nkrumah's allies, who were afraid of being seen as adversaries, or people contrary to his policies.