"What I see before me in this hall today is the future of South Africa", she said.
British Prime Minister Theresa May's dance moves have become fodder for online jokes, after footage emerged of her dancing with children at a South African school.
Ms May visited the ID Mkhize High School in Cape Town, where she was greeted by singing and dancing students.
"I think it's impossible not to look at the British market at this point, but I'll also say that while Britain remains a viable trade partner, it just doesn't hold the same value to Africa as China and to a lesser extent, the USA".
Speaking in Cape Town, South Africa, on Tuesday, May said Africa is home to a majority of the world's fragile states, and a quarter of the world's displaced people.
Britain is eager to expand its investment in Africa, as it competes with the United States, China, France and others for influence on the continent.
France's environment minister suddenly quits live on air
French Environment Minister Nicolas Hulot visits a photovoltaic power plant in Allonnes near Le Mans, France , on January 8, 2018. The government is preparing an energy policy road map for the next 10 years, which aims to reduce the use of nuclear power.
May was also challenged on whether she would order her MPs to vote for no deal if her preferred approach - agreed following talks at Chequers - was not secured with the EU.
She wrote in the guestbook that it was a "privilege" to visit in the 100th anniversary of his birth.
"I welcome the comments that President Ramaphosa has already made, bearing in mind the economic and social aspects of it".
The bell was given to a BBC reporter at a British seaside resort in 2017 following an anonymous tip, according to the broadcaster.
Mrs May also visited Robben Island, where Nelson Mandela was imprisoned for 18 years during the apartheid era.
May is facing pressure at home from so-called Remainers sceptical of her ability to forge trade deals once Britain severs ties with Brussels, as well as from Brexiteers fearful she will not deliver a clean break.
"The PDP also wants the British leader to put President Muhammadu Buhari to task on his widely condemned stand against the supremacy of the rule of law in addition to records of the violation of human rights in Nigeria". She is being hosted by President Cyril Ramaphosa, and is accompanied by about two-dozen British businesspeople.