Pizarrón, pizarra is a whiteboard incorrect
The translation is Why do you think Africa has been denied its history?
I believe Africa is being denied its history because of the slavery that happened. I think that other countries do not want to be seen as mean or cruel. I hope this helps.
A
1.Vende
2. Usa
3. Come
4. Observa
5. Compra
Ser and Estar both mean TO BE.
However, 'ser' is used in permanent situations, e.g: Soy alta = I am tall. Which is quite permanent because I cannot change the fact that I am tall.
'Estar', however is temporary situations, like mood. e.g: Estoy cansado = I am tired.
Hope this helped!