Prehistory.
Because people did not have any form of writing or written language nothing in that time could be recorded or documented.
Answer:
Muhammadu Buhari GCFR is a Nigerian politician who has been president of Nigeria since 2015. Buhari is a retired Major General of the Nigerian Army and served as military head of state from 1983 to 1985, after taking power in a military coup d'état.
Born: 17 December 1942 (age 77 years), Daura, Nigeria
Nationality: Nigerian
Children: Yusuf Buhari, Zahra Buhari, Fatima Buhari, Halima Buhari Sheriff, more
Books: The military class, political class, and the quest for good governance in Nigeria, more
Spouse: Aisha Buhari (m. 1989), Safinatu Yusuf (m. 1971–1988)
A prime minister is the head of government.
because on March 9th 1825 they both were ruled by a prime minister.
