Almost four centuries after Africans started being shipped to North America as slaves, the first US President of African ancestry yesterday visited an infamous embarkation point for those destined for lives in chains.

In his first – and, many Africans say, long-overdue – extended tour of the continent since entering the White House, President Barack Obama focused on political and economic issues while also recalling a painful chapter in Africa’s and America’s past.

On the first leg of an eight-day visit he brought his family to the House of Slaves, a fort built in the late 18th century on Goree Island off the coast of Senegal as a transit point for human beings before they were shipped across the Atlantic. It is now a museum.

“It’s a very powerful moment... to be able to come here and to fully appreciate the magnitude of the slave trade, to get a sense in a very intimate way of the incredible inhumanity and hardship that people faced,” Obama said in brief remarks.

“More than anything what it reminds us of is that we have to remain vigilant when it comes to the defence of people’s hu-man rights.”

Obama’s father was from Kenya and his mother was from Kansas. First lady Michelle Obama is a descendant of slaves.

Junius Rodriguez, a historian at Eureka College near Peoria, Illinois, said Obama’s visit was a reminder of the “remarkable transformation” the US has undergone along the years.

“We have moved from a society in which African Americans were not viewed as citizens, in which social, economic equality was not provided, to one in which we could elect an African American President,” he said before the visit.

Many Africans feel a bond with Obama but have voiced disappointment that he has not engaged with the continent as much as previous presidents George W. Bush and Bill Clinton.