SOUTH Africa's Cyril Ramaphosa said that his party, the African National Congress (ANC), would build on the successes of the last three decades and work to resolve the country's challenges of high unemployment, crime and poverty should it win decisively at the polls. Ramaphosa outlined his party's six priority areas at its election manifesto launch in Durban, a coastal city in the eastern province of KwaZulu-Natal. Recent polls suggest the ANC is at risk of losing its parliamentary majority in the May 29 election for the first time since Nelson Mandela led the country through its first democratic elections at…