Whats a major problem in the south today?

1-Too few South Africans in work
2-The quality of school education for most black people is substandard
3-Poorly located and inadequate infrastructure limits social inclusion and faster economic growth
4-Spatial challenges continue marginalizes the poor
5-South Africa's growth path is highly resourcing intensive and hence unsustainable
6-The ailing public health system confronts a massive disease burden

Iam pretty sure it is c. 2000 bce

This type of energy is called radiant energy.