If u should do a little research u wld discover that the world population hit one billion in the mid 19th century, and is xpected to reach 10 billion by 2050. Within about 150 years the world's population increase by 5 billion. Why would it be difficult to believe it would have increased from 8 to 1 billion in over 4000 years?

This is not 2 bellitle babangida but obasanjo is the most corrupt president that have ruled nigeria. He completely legalized coruption