US lawmakers mark 400 years since first slave shipment in Ghana

US House Speaker Nancy Pelosi condemned the "grave evil" of slavery in a speech to Ghana's parliament Wednesday marking 400 years since the first shipment of enslaved Africans to America.

Pelosi was leading a delegation including members of the Congressional Black Caucus to the West African country, four centuries after the first slave ship arrived in Jamestown, Virginia from the continent.

The legislators visited the 'Door of No Return' at a slave fort on the coast from where people were dispatched in chains to the New World.

"At the Elmina Castle we saw the dungeons where thousands were grotesquely tortured, and at the Cape Coast Castle we stood before the 'Door of No Return,' where countless millions caught their last glimpse of Africa before they were shipped to a life of enslavement," she told Ghanaian MPs.

"These profound places are sobering testament to humanity's capacity for grave evil and also a helpful reminder of the capacity for great resilience, renewal and strength of the people."