The usual suspects in wikipedia

Homosexuality in Ghana was criminalised in 1892.[1] During this time, Ghana was a British colony. The Offences Against the Person Act 1861, a British law which criminalised sodomy, was implemented in all British colonies.

On the other hand, the international foreign NGOs of WASPs aren't helpin'

>In March of 2009, in a conference in Kampala Uganda, American Pastor Scott Lively invited the entire Ugandan Parliament to a breakfast to discuss “The Dangers of Homosexuality.”1 He gave them instructions on how to draft the bill. Within months, the Ugandan lawmakers responded by introducing a bill in Parliament that criminalized homosexuality. Later, Scott Lively bragged about how he campaigned “like a Nuclear Bomb against the Gay Agenda in Uganda.”

Whatever you do, don't trust any any Neoliberals, Reactionaries, et Hawks.... especially those of a White American Sanctimonious Protestant supremacist background