Final answer:
Kwame Nkrumah was initially popular but faced criticism later on, leading to his overthrow by a military coup.
Step-by-step explanation:
In the case of Kwame Nkrumah, many believed that he needed to be put in check due to several factors. Initially, Nkrumah started off as a popular leader in Ghana who implemented various reforms for the benefit of Africans. However, over time, economic and regional issues arose, with some cocoa farmers feeling exploited by funding projects that only benefitted urban elites. As a result, Nkrumah's rule became increasingly autocratic, and his suppression of political opponents led to his overthrow by a military coup in 1966.